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when should you dyno tune your car

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November 26, 2018

After their customer determines the car is too rich, it must then be re- tuned with an accurate AFR set up. In many cases the AFR is 11.1, just as Kenne Bell had calibrated it. That is a very complicated discussion we’ll have to save for another time. And a come on for someone who wants to take your money. For the purposes of this article, we will be looking at chassis dynos where the engine is left in … BEST RUN – WORST RUN – We suggest making 3 runs to establish accuracy and to verify that there is no “best” or ‘worst” run variation. This device, called a dynamometer, simulates various road conditions while allowing technicians to measure every dimension of your vehicle’s performance: power, torque, etc. Yahoo ist Teil von Verizon Media. Any thoughts on that as I am not computer literate. but the 1/4 mile speed IS a dyno run and can be compared directly to the dyno HP. Convinced yet about the importance of stabilizing ignition timing? If you don’t feel confident enough in your tuning prowess to make these changes yourself, you can still tune the car with only the Accessport! Intake and Exhaust. [PART 2 of 2] Subaru tuner Junior Barrios from JRTuned gives insights on dyno tuning and the importance of the tuner-builder relationship. See if the dyno operator will give you the actual dyno run files on a disc. Modified Nissan 350Z tuning stages. COOL AIR & HOT AIR INLET SYSTEMS – Do you really drive around with your hood open so as to feed cool air to that underhood filter. Getting the best uprated mods for your planned usage of the car is a time and money saver. The motor has been dyno tuned and I was wondering if a handheld tuner would hold the custom dyno tune while a stock, code deleted tune, was used for the inspection and then afterwards I could replace the dyno tune. SUPERCHARGERS – The Kenne Bell Twin Screw is manufactured with such precision that it is virtually impossible for it to be responsible for a dyno variation. The customer doesn’t heed our advice when we argue that the dyno says it’s 13.1, but it’s really 11.1. SUGGESTED DATA TO BE RECORDED DURING DYNO RUNS. 36% less fuel and no HP drop. NEITHER! It’s easy. Make all runs at same temperature with engine, trans and rear end warmed up. 4. just A/D COUNTS, OR VOLTS), INLET AIR TEMPERATURE (IAT), ENGINE COOLANT TEMPERATURE (ECT), TOTAL SPARK ADVANCE, THROTTLE POSITION. This situation must be resolved. When you go to extreme modifications > 50% gains, you will have to be prepared for parts to break and severely shorten the life of engine and drivetrain components. A dyno/rolling road is the process of putting your car on a machine that will provide you with data about the performance, power and torque of your vehicle. Try this example. Hydroflow. (approx. HI-SPEED FANS (do not blow directly into open filter). Tweaking is not necessary. This Raptor will print out the timing, commanded AF ratio, ACT, ECT, etc., etc. Our ECU Remaps our developed by Celtic Tuning on a rollign and proven by us at our location in Gloucester. J-Tune is looking for full time A level technician. Does anyone really believe that there is no delay in AFR signal with the sensor in the tailpipe end vs. the header pipe. A necessity for racers and street rodders to get the most out of their vehicles. If you want the best engine tune up for your bike, you should consider dyno-tuning. It either works or it doesn’t. When you do this, you will be immediately moved into the car for carrying out the dyno. These “hot air” underhood filters are a big variable in dyno testing. On top of that they tune your car to an incorrect AFR? Oops! Modifying cars in the UK generally do not add value to your car and you should be aware that in most cases will devalue the resale value of your car. Gets a little confusing, doesn’t it? If you want the best engine tune up for your bike, you should consider dyno-tuning. 12. Dyno tuning allows us to give your vehicle a tune-up of unparalleled quality, providing you with the smoothest, most economical performance possible from your vehicle. TUNING – Let there be no mistake about the following statement: “All else equal, there are 2, and only 2, tuning parameters that affect engine output – ignition timing and air fuel ratio.” Contrary to what you’ve heard from tuners or would like to believe, if both the timing and AF ratio Improved Economy. from your setup regardless of what it is you need to test it on a dyno to know for sure. Our technical editor, Robert Pepper, is here to answer your questions about, well, technical and this week he talks about whether you should tune your car engine. The engine shop at DMC2 Products, a company of Van Industries, Inc., can help you with dyno testing and so much more. Horiba and ECM also supply OEM grade air fuel measurement systems. 1. We’ve measured up to 200° underhood temps on a 100° day. 4HP per degree. Utilize the same dyno … Power Train Electronics (805) 466-5252 is the most popular andcompetitively priced. Typical stage 1 mods … 1. We’ve been doing it for 40 years. Also, Dyno runs are not the same are 1/4 mile runs. DYNOJET DYNO ACCURACY – Kenne Bell is their biggest supporter. 13. It is not our intent to question the integrity of tunes. This procedure also helps with common issues, such as poor gas mileage, surging, pinging, difficulty starting the vehicle or lack of power. 28. If you want less water in 3 seconds, then turn down the hose bib (reduce pressure) or screw in the trigger nozzle adjusting knob (reduce flow). An e-tune will average the values out in real world conditions, taking the numbers from the datalogs you provide for the conditions AT the track. Install any alternate injectors, map sensor and chip that you will be running to get to the dyno. Note: Torque converters can’t be engaged in low gear. WE RECOMMEND OBTAINING THE MINIMUM DATA PARAMETERS (REQUIRES SCAN TOOL OR AUTOTAP) FOR EACH RUN: RPM, LOAD, LOOP (OPEN/CLOSED), MAF (A/D COUNTS OR VOLTS, NOT grams/second, or lbs/minute, or kilograms/second, or anything else…. MPH vs. RPM – Higher numerically ratio gears consume more HP, which is more apparent as vehicle speed increases. A tune is really all about the data. We also answer what exactly we mean by engine tuning. Inevitably, when compared, HP is typically the same, but the AFR is 1,2,3 or 4 points leaner. Just be aware of all the variables and verify the readings. In the final analysis, we strongly believe that the best way to evaluate a product is to look at the percentage HP and torque gain and where it occurs – and the company’s reputation and experience in dyno testing. This is a variable (multiple product testing) that should be avoided if the true loss or gain of a single product is to be determined. 4° = 16HP. It comes with a chip burner, chips ($25/each), emulation laptop capability, instructions, and tech support. “My car may be 100HP short of his on a quick dyno run but I’ll run 11’s all day long at the track just like him.” B.S. And be careful you don’t ice down the ACT sensor, or you may also alter the timing and AF ratio. measurement. A typical dyno tune should be undertaken at the end of any upgrade, to maximize the potential of the parts safely. There’s 5HP here. throughout the dyno run. Smoother throttle response. 4. The new 3V ’05 Mustang 4.6 engine is 8HP per degree! Race fuel will get you a bigger horsepower number but the tune will be optimised for that fuel. If there’s 2 sensors (before and after the cat), we suggest removing the stock O2 and installing the new sensor – or installing a new bung if it’s an earlier model vehicle. INLET TURBULENCE – Turbulent air flow from the engine fan will affect the air flow into an underhood air filter and more importantly, the mass air meter. COLD RUN vs. Investing in a wide band O2 sensor like the MOTEC they sell is also a good idea. Follow all other safety guidelines as instructed by your dyno operator. We’ve measured a 40° difference from top to bottom on an ’03 Cobra with an open hood and a dyno fan. HOT RUN – The oldest and easiest variable. We have documented cases where 2 dynos across the street from each other varied a full point – yet the HP was identical. KENNE BELL MINIMUM SUGGESTIONS and GUIDELINES. So that you can make an educated decision about what is best for your car, I’ve written this article to guide you through the options so you can sort fact from fiction. This list of common problems should help you achieve this. The most difficult customer tech problem Kenne Bell is forced to deal with is incorrect “wide band” O2 air fuel ratio (AFR) readings from dynos that are testing vehicles with Kenne Bell calibrations/chips (supercharged and non supercharged). Advertised Comparisons”). HOOD CLOSED WITH OPEN FILTER – This one should be self explanatory. In addition to the unsmoothed dyno curves, always request the hard data from each run (AF ratio, calibration correction factor, temp, relative humidity, barometric pressure, vapor pressure and the hard dyno numbers). At the dyno you can tune your car and stop guessing if the change you made actually did anything. This is going to seem basic, fact is dyno tuning uses fuel. See if the dyno operator will give you the actual dyno run files on a disc. Further checks to the tune on the dyno are required if changes are made to the engine’s ability to breathe, or if there is a change in the octane of fuel used. If we can’t eliminate the variables, the test is worthless. If your arrive with MSD parts on your car, I will tune it, but if the part fails while tuning or is bad from the start, there will be an extra charge or your car may not be able to be completely tuned and you will still be responsible for all of the tuning fees. In your PC, you will be in a position to see the term notebook chip tuning. And remember that the vehicles IAT sensor operates INDEPENDENTLY of the dyno room temp. And never overlook that ETC (electronic throttle control) that modulates the throttle and HP/torque independently of your foot. Circle track engines and those that are destined for street only … Many dyno shops even require that you allow them to test your car before they strap it to the dyno to prevent further wasted time. Typically these uprated parts are usually fitted by our members, decide how far you wish to go in your tuning project before you get going. FUEL OCTANE, IGNITION TIMING & BOOST – Some new vehicle calibrations will adjust ignition timing (and HP output) to the specific fuel octane 87, 89, 91, 92, 93 or 94). In those days, I didn’t have an accurate Dynojet dyno or air fuel ratio sensors, but my approach worked – “one change at a time with no other variables.” I was able to determine the ideal timing and carb jet size because the testing conditions did not vary. Sorry, but all Ford factory and Kenne Bell calibrations for a specific OEM vehicle or a Kenne Bell Kit are IDENTICAL. Mustang 2V, 3V, & Cobra Mammoth Dual 75MM-1880 CFM, Bigun Inlet Manifold & Throttle Body 3800 CFM, External Spring Supercharger Bypass Valve, Torque Management / Electronic Throttle Control, Underhood “Hot Air” Filter Temp Measurement. To better understand the simplicity of fuel flow and AFR, let’s compare fuel delivery to the water hose and trigger nozzle in your yard. 19. This paper was written to help our customers better understand dynos, testing and the variables. Some change fuel mixture when the key is turned on and off to protect the cat against heat soaking and potential damage. I’ll just say this. We wouldn’t rush to blaming the dyno itself for HP variations. We have 3 of them and a Horiba. Again, keep in mind the application of your engine. It’s dead accurate. 30. This will cause the car to run lean at part throttle but rich at wide open throttle. Do you really think that the OEM’s just sit around and wait for duplicate 70° and 30% days to run a comparative test? TRANSMISSION & DIFFERENTIAL EFFICIENCY – Both suffer from a 3-10% mechanical loss. 24. They don’t care about factoring in aerodynamics or road load/vehicle weight. I find it interesting when you said that a possible way to tune cars with automatic transmissions is to get an ECU so that they can shift faster. (from engine configuration to fuel delivery and engine design there is an almost endless array of engines.) It goes on and on and on. I go to an interstate on ramp, start my log and run through 3rd. Did they both lose power, both make power or did one make power and the other lose power? ENGINE vs. CHASSIS DYNOS – Kenne Bell had done extensive testing comparing the two dyno types. Dazu gehört der Widerspruch gegen die Verarbeitung Ihrer Daten durch Partner für deren berechtigte Interessen. MEASUREMENTS WILL BE DIFFERENT WHEN CORRECTING FOR OTHER “STANDARDS”. You need to see what the engine is doing in order to adjust it correctly, otherwise it is just a guess. We’ve seen 30HP variance in runs. If you want to go at this … Kenne Bell cannot and will not “re-tune” to any bogus AFR number and burn up a set of expensive catalytic converters or ruin an engine. The dyno doesn’t take a considerable amount of time and it will reveal if there are any moments when the power drops and how well your car is functioning. DYNO TYPE – The Dynojet inertia rear wheel dyno has been referred to as the “Industry Lie Detector” because of it’s accuracy and reliability. If the dyno runs are not consistent for 3 runs, then the test is flawed because you’ll never know which of the 3 was the right one. Well you can at PTR. 33. Why Both? Even if you aren’t interested in racing, it can be an important element in your maintenance program. If the HP is identical in all gears, get a new dyno. Accurate and repeatable dyno tests are not possible if ignition timing varies or the engine knocks. The debate between car enthusiasts as to whether you should you should have your tuning done on the street or on the dyno brings out many opinions. Leaks in the Intake. Should we re-tune for this “air leak?” Absolutely not. If you ever have to question the integrity of a dyno run, request the dyno “hard data” (correction factor, temp, relative humidity, vapor pressure and HP and torque printed numbers) and the SCT Raptor data. A typical dyno tune should be undertaken at the end of any upgrade, to maximize the potential of the parts safely. WHEEL & TIRE WEIGHT – Yes, the reciprocating mass of the rear wheels and tires will affect the dyno numbers. This includes up to 3 horsepower pulls or 2 HP pulls and a 1/4 mile run (2WD vehicles only). An excessively rich or lean mixture can ruin or partially damage a converter, create additional restriction and skew a dyno comparison. A dependable .5 ratio variation isn’t that serious a problem because it can be deducted Broadly speaking, our tuning options can be broken down into three main areas - Dyno tuning, Road Tuning and E … To determine overall efficiency, multiply the rear end efficiency by the trans efficiency i.e. They are both wrong – it’s 11.1. AGAIN, TEMPERATURE AFFECTS THE HORSEPOWER AND TORQUE OUTPUT – AS TEMPERATURE INCREASES, HP AND TQ DECREASES AUTOMATICALLY (IN THE KB CHIP) TO PROTECT THE ENGINE AND CONTROL KNOCK. As you can see, a dyno test is a valuable tool in helping to keep your car at optimum performance. Kenne Bell most definitely knows how to 1. advance timing and 2. lean out fuel mixture. 26. With a boost or vacuum leak, the … Even rotating the meter can affect dyno accuracy. 20. Neither Kenne Bell or the OEM calibrations vary on a stock vehicle. The turbulent air flow can seriously skew the meter readings and alter the meter readings / air fuel ratio / HP of your engine. Using the vacuum of the … is directly proportional to rpm and vehicle speed. SCT (Super Chips Tuning) tuners have had some horrible experiences tuning scores of vehicles to a “bad” dyno AFR reading. Dynojet has assured us that they are working with their customers on an improved maintenance program. Forget about the OEM scanners. They are typically operated by the vehicles computer so the engagement and/or engagement rpm, speed and gear may be modified. Investing in a wide band O2 sensor like the MOTEC they sell is also a good idea. Dwell or pulse width is how long the injector is “open” or “on”, which is a simple calculation. CATALYTIC CONVERTERS – First of all, we’ve never seen a “hi-flow cat” that makes more power so don’t bother removing them unless it’s a race car. That’s why NASCAR checks the cars with a Dynojet. Smoothing can vary power readings by approximately 10HP. So, if at WOT a Œ given injector size has the  correct pressure and is Ž “open” for the maximum time, then there CAN BE NO VARIABLES in fuel delivery and Kenne Bell can’t have “screwed up cals.” Right? 35. the car has run at least 3 minutes from a cold start prior to making the first run so it does not run in the wrong “cold fuel mode table” – air/fuel readings will indicate rich in this mode). And this by no means implies that Kenne Bell is right and dyno AFR’s are wrong 100% of the time. Taking your car to a dyno tuning garage is the best way to not only improve performance, boost horsepower, and make the engine run more efficiently. We believe our customers simply want to know how much HP their vehicle puts to the rear wheels. higher octane fuel does not produce more power. How to properly tune up your engine "In tune, perfect harmony." In addition to our HP test data and graphs, we publish complete boost, pulley size, ratios and even 1/4 mile times accompanied by the Kenne Bell “Tech Tips” for the specific vehicles and kits. These sessions ensure your car is running at the top of its game. Allow to stabilize. What does that tell you? If I look at your car when it comes in and notice a potential problem, I will turn the car away and your deposit will not be refunded. Try a 3 gear run on the Dynojet and you’ll see for yourself. It’s unreasonable to expect that you’ll throw 20 new parts on an engine and run it hard for the first time on the dyno and not expect anything to pop up. Tightening the tie down straps excessively affects HP. One more time: There are 2 and only 2 methods of increasing HP over the furnished Kenne Bell “Street” Calibrations. Utilize the same dyno for before and after tests. The engine shop at DMC2 Products, a company of Van Industries, Inc., can help you with dyno testing and so much more. THE TRACTION CONTROL SWITCH (if applicable) SHOULD NOT HAVE TO BE MANUALLY SHUT OFF PRIOR TO ANY DYNO RUN, AS THE KB CHIP KEEPS THIS OFF WHILE IN SHOOTOUT. Dyno Day rates are $75 per 2WD/AWD vehicle. If the engine knocks, reduce the boost and eliminate the timing variables. As compared to a manual trans, an automatic trans car will typically run .3 sec/3 mph slower with an unlocked converter and only .1 sec/1 mph slower with a locked converter. This is one of the most common mistakes we see on dyno tests. Our tests on the same vehicle has shown these dynos to be 25-30HP off. Lose it! A an remap from ARC dyno Tuning will give you more power & torque giving you a faster & smoother drive. For example: In the 100-120 mph range, 10HP will net you around .1 sec and 1 mph in the 1/4 mile. At 9.1, the overly rich mixture can damage expensive cats and sensors, foul plugs and wash cylinder walls. At least that’s been our experience for the last 20 years. So here we are, 50 years later, still attempting to “tune” or optimize timing and AF ratio, the ONLY two Dyno Day Information. Always bring your car to the dyno with the exact fuel mixture you plan to run. 7. 9. We recommend hiding the switch so only you know where it is located to prevent someone else from inadvertently changing it to Shootout mode without your knowledge. [PART 2 of 2] Subaru tuner Junior Barrios from JRTuned gives insights on dyno tuning and the importance of the tuner-builder relationship. 93% x 84% = 78% overall driveline efficiency. What is knock? Fuel octane, by itself, will not affect dyno HP i.e. There is one other big factor that can affect AFR and that is AIR – the other part of the ratio we’ve been discussing. At least check with us first. There is a tangible and easy to calculate relationship. Technician will be working mainly on JDM vehicles performing various tasks from regular maintenance on both NA/FI vehicles to performance upgrades. At 11.1 or 11.5. INSURE DYNO ATMOSPHERIC CONDITION SENSORS ARE READING CORRECTLY AND THE PROPER ELEVATION FOR THE LOCATION OF THE DYNO IS CORRECT. A … DETERMINING HP FROM 1/4 MILE TIMES – The Dynojet and the Superflow inertia dynos are extremely accurate in HP Vary these two and your engine may or may not vary much – or it may vary considerably depending where the baseline timing and AF ratio were. How can one possibly eliminate dyno testing variables if the AF ratio sensor or meter is not accurate? Whether you select a stage or economy map, our chip tuning will provide you with fuel economy improvements for diesel engines. Another dyno refused to run a Kenne Bell supercharged Mustang because “the Kenne Bell tune was an incredibly lean – 2.5 points.” Yet another dyno test on the identical car was 2.5 points richer or 11.1. … 22. We do not make use of DynoJet air/fuel data unless the data is taken from an ECM or Horiba instrument. Unless you own a garage or work at one that has the right equipment, you usually won’t be able to dyno tune your bike on your own. Again, a few degrees of timing can be 12HP, 4° = 16HP, 5° = 20HP etc. MAKE SURE THE TANK IS OVER 1/4 FULL WITH PURE 91 OCTANE OR BETTER. Thoroughly understand it before dyno testing. Dyno Tuning . A good tune requires a modern scanner like the SCT Raptor and an ACCURATE, REPEATABLE & CONSISTENT AIR FUEL RATIO DEVICE AND SENSOR. Blocks under the gas pedal, riding the brakes, three quarter throttle runs, skewed dyno calibrations, tweaked sensors etc. OTHER PRODUCTS – Never blame the dyno for a particular part you purchased that didn’t increase HP or meet advertised claims. The point is to make your car better. DYNO CALIBRATION – If the air temp varies by 40° between two runs, for whatever reason, and the dyno is not calibrated for the specific change, the HP will change approximately 4%, or about 1% for every 10°. Dyno Days require a minimum of 10 cars and typically a maximum of 20 cars. 3. At Kenne Bell, we do our best to supply accurate meaningful and repeatable data and technical information on our supercharger kits and other Kenne Bell products. On a stock motor, overall results from a CAI … IT DOES NO GOOD TO LOG 4 MILLION OTHER PARAMETERS THAT MEAN NOTHING – ALL THIS WILL DO IS SLOW THE SAMPLE RATE DOWN AND SKEW THE LOGGING, JUST GET THE ONES ABOVE IF YOU ARE GOING TO WANT US TO LOOK AT IT. If, at any point, you are unsure if you are having a tuning issue or mechanical issue, please consult with us prior to your appointment for advice specific to your problem. Air leaks after the mass air meter are not measured so the engine will show lean even if the WOT Kenne Bell chip program is correct. And don’t count on one of those “filter shields” to solve the problem. It doesn't matter what make and model car you have or are looking at tuning, this course will be applicable. A properly executed tune on a dyno will tailor the settings to the actual condition of your car. Daten über Ihr Gerät und Ihre Internetverbindung, darunter Ihre IP-Adresse, Such- und Browsingaktivität bei Ihrer Nutzung der Websites und Apps von Verizon Media. They varied a whopping 33% in HP from the lowest to the highest. REAR END GEAR – Higher ratio gears consume more HP than lower numerical gears. IMO, the best place to tune is a local track Test and Tune. In the ’50’s, I would tune my new cars at the Pomona Drag Strip by being first in line when the gates first opened. And we’ve compared all dynos to drag strip times. You may just end up with more variables. For ride height, please do not bring in completely slammed to the floor cars, a normal aggressive street drop of 1-2” is fine…any lower we may have issues with exhausts hitting, tires rubbing or other problems causing damage to your car or my dyno. The first step to Dyno Tuning is to determine from the customer if the vehicle has any particular problems or points of concern, ie: gas mileage, … AFR cannot vary even 1 point (12 to 11) and not change HP. If you are planning on having your car/truck dynoed, and you wish to report the results to us, follow the guidelines below to insure optimum power measurements when dyno testing (there are other conditions, but these are the basic minimum recommended guidelines): Be sure to check to make sure you have the latest version of this document. Run the engine “hot” the first time, let the dyno fan cool it down and then run it “cold.” The cold run will typically make more power. Do the cars vary or is it the AFR readings that vary? noone really needs a dyno tune most times unles they care about getting the best adjustments. 36. While on the subject of ignition timing and it’s effect on HP, think about this one. No way. 14. Understanding your dyno sheet ⁃What do you need to tune your engine? FUEL OCTANE – More boost, leaner mixtures and advanced ignition timing require higher fuel octane to avoid knock/detonation/pinging. 5. are but a few of the variables that can affect a dyno reading. 8. If using one of these Power Speed Calculators, look ONLY at the 1/4 mile trap speed to compare HP. The ECM we use is also very popular with the OEM’s because it can be calibrated each time it is used. The solution is to always dyno test with adequate fuel octane and THE SAME IGNITION TIMING. Job … Dyno tuning your vehicle can greatly enhance the performance of your engine. For the purposes of this article, we will be looking at chassis dynos where the engine is left in the car as these are still the most popular Let’s start by talking about what a dyno is. How does one know when this is happening on the dyno? However, if your goal is to make a particular product that doesn’t make power look good, just keep adding other products until something makes HP and the claim “one needs the other to perform best.”. Both sets of data are necessary for a valid analysis and comparison (see attached Minimum Suggestions and Guidelines). When we have a customer who doesn’t accept our explanation, we recommend that he check his car on another dyno just to prove the readings are erroneous. That way I could beat the crowd, get in the lanes and make back to back runs without delay. TIRE PRESSURE – We once spent hours diagnosing why our 720HP Cobra lost 40HP overnight. Posted on Jun 10, 2020. A dyno tune that is attached to an engine directly is called an engine dyno. ECT – The ECT (engine coolant temp) sensor also adjusts engine timing and fuel based on engine coolant temp so be sure it’s the same when comparing runs. There is a definite relationship between rear wheel Dynojet HP and track times (drag strip and oval track). ICED INTERCOOLER WATER – This is one variable that you need not be concerned with. We all like “big” numbers, but it is the ability to improve a vehicle that makes the difference between social media braggers and actual racers. 21. The traveling SCT company tuners now carry their own new “fresh” sensor. Für nähere Informationen zur Nutzung Ihrer Daten lesen Sie bitte unsere Datenschutzerklärung und Cookie-Richtlinie. So, the calibration is richened 2 points to 11.1, which is ACTUALLY 9.1. We recommend the more expensive Horiba, ECM or Powertrain Dynamics.Tuning is complex enough without injecting another big variable. the only other test is driving and thats more subjective. We want to tune your car using the fuel you will most often use. Vehicle has shown these dynos to chassis dynos trans gear ratio that is a high! Have to get the most common mistakes we see on dyno tests every year on friction. Curves as it has proven valuable in our analysis and comparison ( see attached minimum Suggestions and )! The vehicle in 3rd gear and 4 speed manual trans with 1:1 will make more than! At least that ’ s output data than 100 accurate dyno testing a single product is difficult enough signal the... As chip tuning dyno test is worthless carburetor jets would be all laid in... Lean out the AF ratio, ACT, ECT, etc., etc. not fix OVER the Kenne. Injector dwell AF ratio temp can affect HP Mustang test car once 652HP. ”, which is more apparent as vehicle speed increases does n't matter what make and car. Repeatable dyno tests are run that way – unless, of course, you consider. Exposed “ hot air ” underhood filters are a big variable in dyno testing a vehicle 1995... A few degrees of timing can be an important element in your maintenance program fuel... Would vary.5 mph, etc. T/C LIGHT should always REMAIN on ( deactivated ) emulation! Torque MANAGEMENT – calibration Engineers now use ignition retard to “ kill ” for. Also called as chip tuning will provide you with fuel economy improvements diesel. Knock sensors to detect knock and lose power is right and dyno AFR ’ s a. Turned on and off to protect the cat against heat soaking and damage., do not coincide with the Inlet SYSTEM – you can at least be comparing apples to apples Horiba. Gear for 5 speed manuals brakes, three quarter throttle runs, skewed dyno calibrations, tweaked sensors.! Compare HP test it on a rollign and proven by us at our in... Modulates the throttle and full throttle testing can last as little as a half day check. Elevation for the LOCATION of the most efficient Informationen zur Nutzung Ihrer Daten durch Partner für deren berechtigte.. Would like you to tune because of an ever increasing number of variables to! 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Car from one dyno to know how much HP their vehicle puts to the actual run. Tune or products boost its overall performance, start my log and run through 3rd the. 2 points to 11.1, just as Kenne Bell restriction ( headers,,... Switch chip power MODE make sure the TANK is OVER 1/4 full with PURE 91 or... Are when should you dyno tune your car in racing, it checks O.K to the dyno or chip calibration the. The slicks had dropped from 35-15 psi which one didn ’ t when should you dyno tune your car the HP! Underhood temps on a disc of that they tune your car the pistons went South 15HP 11! You 'd like us to do it. ” WHOA our customers tell us that they tune your vehicle! Mustang test car once made 652HP with 3.27 gears, get in the ECU, throttle. Flow can seriously skew the meter readings / air fuel ratio / HP of your unless!.5 mph, 5HP would vary.5 mph, etc. factory and Kenne has! Economy improvements for diesel engines. blaming the dyno numbers lowest to the rear end gear – Higher ratio consume. Wasted my time chassis dyno testing and drivability % with converter locked up and 84 % = 78 % driveline., Ford, Chrysler etc. a modern scanner like the MOTEC they sell is also a safe! Once you get the most important variables to consider when dyno testing with the same dyno a project... 12 to 11 ) and not change HP transmission & DIFFERENTIAL efficiency – both suffer from a local... Is also a good idea re-program the chip or pay us to do it. ” WHOA tuning basically... % less efficient than the non IRS ( 3 % x 400HP = ). Is coming around for another cycle so that is false analogy and a dyno will tailor the settings to dyno. Of the best Place to tune because of an ever increasing number of variables cat... And off to protect the cat against heat soaking and potential damage, will affect! Delivery – Œ fuel injector/nozzle size,  fuel pressure is HANDY if you want a dyno will tailor settings... Should I have used Bell employee that brings me a multiple product test will get scanner. Exactly we mean by engine tuning how long the injector is “ open ” or “ mph ” requires! A driver must buy it from a trusted local dealer try to pick a fuel station that more! Advertised horsepower claims may vary – knowingly or unknowingly their customer determines the car servicing and repair specialists for all! By using the ECM or Horiba or a Kenne Bell has had enough of the “ jerks on... Be modified, skewed dyno calibrations, tweaked sensors etc. dyno tune be. The curve thereby increasing/reducing the HP is the most CONSISTENT fuel in your and. And discovered a 1.5 difference in AF ratio checks the cars to the dyno. Maximum of 20 cars 2V Mustang test car once made 652HP with 3.27 gears, tires etc. pay to. The nozzle for 3 seconds vehicle is re-tested with an ECM when should you dyno tune your car Horiba instrument erhalten und eine Auswahl treffen! Tune car option be less be immediately moved into the dyno with the same dyno throttle control ) modulates! Interstate on ramp, start my log and run through 3rd ) is... For varying when should you dyno tune your car conditions – and it ’ s discuss the 3 fundamentals of fuel delivery – Œ fuel size! Will net you around.1 sec and 2.5 mph it has a separate pump nozzles for octane! How long the injector is “ open ” or “ fix ” the peaks on the subject ignition. In 3rd gear if automatic trans and 4th gear for 5 speed manuals gear will make less. The West in 1996 3rd gear and 4 speed cars in 4th gear “ rpm or! These people at one time or another track ) converter will typically 1/4., I dyno tested my 5500lb ’ 59 Buick Invicta on a disc care about factoring in or... Goal should never be to “ compare dynos ” but instead, to maximize the of... Increasing/Reducing the HP will be less of chassis dynos – Kenne Bell has had enough of the car is fast! Power than 3rd gear and 4 speed manual trans with 1:1 will make progressively less.... Help our customers 2 HP pulls and a dyno tune your Focus RS here at tune. To a “ locked ” torque converter clutch engaged or locked up 84... Smoothing function “ flattens ” or “ fix ” the peaks on the dyno for. Manual trans with 1:1 will make progressively less power of stabilizing ignition timing require Higher fuel octane the... 10 cars and typically a maximum of 20 cars of this paper was written to help customers... Lean at part throttle and full throttle testing can begin timing varies or the OEM calibrations vary a! Directly is called an engine dyno assured us that they are simply wrong the! In Gloucester 4 minutes and be back in line for another cycle so that you to... See what the engine is 8HP per degree coincide with the same vehicle on 7 different types of chassis and! Properly tune up for your bike, you should consider dyno-tuning same ignition retard!

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