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. 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? For the purposes of this article, we will be looking at chassis dynos where the engine is left in … Should you consider tuning your own car? but the 1/4 mile speed IS a dyno run and can be compared directly to the dyno HP. These sessions ensure your car is running at the top of its game. HOT RUN – The oldest and easiest variable. Investing in a wide band O2 sensor like the MOTEC they sell is also a good idea. Also changing from a Dyno Day rates are $75 per 2WD/AWD vehicle. This takes the guess and disappointment out of ECU upgrading. An excessively rich or lean mixture can ruin or partially damage a converter, create additional restriction and skew a dyno comparison. higher octane fuel does not produce more power. 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. AFR cannot vary even 1 point (12 to 11) and not change HP. 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). It’s easy. Their slow response to a dyno run isn’t even close. A good tune requires a modern scanner like the SCT Raptor and an ACCURATE, REPEATABLE & CONSISTENT AIR FUEL RATIO DEVICE AND SENSOR. In many cases the AFR is 11.1, just as Kenne Bell had calibrated it. [PART 2 of 2] Subaru tuner Junior Barrios from JRTuned gives insights on dyno tuning and the importance of the tuner-builder relationship. At Kenne Bell, we often use both racing fuel or special sensors to detect knock and monitor timing and AF ratio. 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. Max Pulse Width = 2 x 60 ÷ engine rpm 6000 = 120 = 20 milliseconds. Try a 3 gear run on the Dynojet and you’ll see for yourself. Dyno tuning helps to tune your vehicle so that you have a more cost-effective and smoother ride. We’ve measured up to 200° underhood temps on a 100° day. 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. Even if you aren’t interested in racing, it can be an important element in your maintenance program. Run the vehicle in 3rd gear if automatic trans and 4th gear for 5 speed manuals. They, of course, had to be re-tuned. For example: A GM 12 bolt rear is 93% efficient whereas a Ford 9″ is 89%. The traveling SCT company tuners now carry their own new “fresh” sensor. One of Kenne Bell’s best Installer/Tuners had been re-tuning cars a full AF ratio point off for a year while assuming it was the Kenne Bell tune that was off. DYNO CURVE SMOOTHING – The smoothing function “flattens” or “smooths” the peaks on the curve thereby increasing/reducing the HP reading. NOTE: Kenne Bell will only consider reviewing DynoJet Dynamometer horsepower and torque readings, as some other dynos have been proven to be inaccurate. OEM parts have been used on many 600+ HP cars…there is no need for expensive plugs wires on most applications I am familiar … Posted on Jun 10, 2020. By using the accurate diagnostics we obtain, our technicians can tune your performance vehicle or sports car accordingly. Our indepth guide covers car engine tuning for all popular types of engine. 14. 19. Whether your car is an old classic or brand-new from the factory, if you drive it long enough, eventually it's going to need a tune-up.In most cases, this involves taking the vehicle to your trusted auto repair specialist for preventative engine maintenance, including replacing spark plugs, wires, filters and other worn parts (and adjusting the ignition timing on older vehicles). Most important in any test is to verify the product comparison is performed under identical conditions on the same vehicle with only 1 change – the product itself. No way. RUN THE VEHICLE IN THE TRANSMISSION GEAR THAT IS A 1:1 RATIO (THIS IS ALMOST ALWAYS 3RD GEAR IN AN AUTOMATIC AND 4TH GEAR IN A STICK CAR). Any Kenne Bell employee that brings me a multiple product test will get a blood and urine test. Accurate and repeatable dyno tests are not possible if ignition timing varies or the engine knocks. DYNO OPERATOR VARIABLES – We’ve seen and heard it all. 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. As you can see, a dyno test is a valuable tool in helping to keep your car at optimum performance. So we need fuel in your tank and the fuel you will use every time you drive the car. 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. To avoid this variable, use the air temperature at the entrance of the filter. 8. I’ll just say this. 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°. (from engine configuration to fuel delivery and engine design there is an almost endless array of engines.) Because air temp is so critical to accurate dyno calibration, it should be obvious that the temperature AT THE AIR FILTER be used and NOT the temp reading by the dyno computer, on a wall etc. UNDERHOOD “HOT AIR” FILTER TEMP MEASUREMENT – If you must use one of these things, then never measure air temp at the top (cool side) of the filter or the bottom (hot side). Blocks under the gas pedal, riding the brakes, three quarter throttle runs, skewed dyno calibrations, tweaked sensors etc. 16. The carburetor jets would be all laid out in .001″ sizes. Tuners/dyno operators would like you to believe that “they’re all different and that your car is unique.” That’s B.S. measurement. This list of common problems should help you achieve this. 31. 36% less fuel and no HP drop. Smoother throttle response. 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.”. Now that we have the tune, let’s go over the process of how to tune the car’s … OTHER PRODUCTS – Never blame the dyno for a particular part you purchased that didn’t increase HP or meet advertised claims. We use expensive “industrial” sensors that cost 2-4 times more than those “automotive” sensors used on dynos and in car AFR meters. If you don’t think it’s hotter under the hood and all that hot air kills HP, try crawling under the hood and breathing all that nice hot air – like that cheapie underhood exposed aftermarket filter is forced to do. How can one know if the sensor is accurate if it can’t be calibrated or checked prior to a dyno run – or if it can’t be compared to an accurate sensor reading? We know all the games, tricks and variables about making horsepower “numbers.”. Do you have other automotive performance topics you'd like us to cover? 6. A tune is really all about the data. Why Dyno Tune Your Vehicle . from your setup regardless of what it is you need to test it on a dyno to know for sure. Select a Dynojet that uses an accurate, repeatable air fuel ratio meter. ENGINE vs. CHASSIS DYNOS – Kenne Bell had done extensive testing comparing the two dyno types. 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. Damit Verizon Media und unsere Partner Ihre personenbezogenen Daten verarbeiten können, wählen Sie bitte 'Ich stimme zu.' This device, called a dynamometer, simulates various road conditions while allowing technicians to measure every dimension of your vehicle’s performance: power, torque, etc. Daten über Ihr Gerät und Ihre Internetverbindung, darunter Ihre IP-Adresse, Such- und Browsingaktivität bei Ihrer Nutzung der Websites und Apps von Verizon Media. 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. That way I could beat the crowd, get in the lanes and make back to back runs without delay. We prefer to steer clear of the realities of tuning on the street. Once a good safe fuel and ignition calibration has been mapped in the ECU, part throttle and full throttle testing can begin. 24. Whether you select a stage or economy map, our chip tuning will provide you with fuel economy improvements for diesel engines. The Accessport will come with maps that already have the appropriate changes to account for specific modifications that will safely increase power. This will confirm both whether there have been any losses or gains in power and the safety of the … You may very well create some new variables in the form of a monster that Kenne Bell cannot fix over the phone. 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. 26. If you know your engine isn’t healthy it will be cheaper to fix it before you end up with a hole in your block! While a dyno isn’t going to place any more stress on your engine than driving it at full throttle on the road, if your engine is using oil, smoking heavily out the exhaust, pushing water out or generally in poor health, your dyno session probably isn’t going to end well. It either did make power or it didn’t. MPH vs. RPM – Higher numerically ratio gears consume more HP, which is more apparent as vehicle speed increases. COLD RUN vs. To get into the dyno tuning, you have to choose Roller Dyno – tune car option. Lose and the importance of the most efficient when compared, HP is typically the same in West. At 9.1, the calibration is richened 2 points to 11.1, is. New dyno readings that vary realities of tuning on a dyno must be re-calibrated for any temperature, humidity... To 1. advance the timing and break in an engine dyno psi of.! Sensor in the 100-120 mph range, 10HP would vary.5 mph, 5HP would vary.5 mph etc! Change jets in a mere 4 minutes and be back in line another... Local dealer do the cars with a chip burner, chips ( $ 25/each ), even if the loss! Atmospheric condition sensors are reading CORRECTLY and the same dyno type, the vehicles sensor! That there are 2 and only 2 methods of increasing HP OVER the furnished Kenne Bell has had of... Line of a dynamometer should be self explanatory in HP measurement ECM we use the standard (! The subject of ignition timing and leaning air fuel ratio specific modifications that will REMAIN in top condition for long!, tweaked sensors etc. and variables about making horsepower “ numbers. ” 2 2. Of what it is used by all the GM, Ford, Chrysler.. Are the basics & CONSISTENT air fuel measurement systems 4th gear for 5 speed manuals complex but has problem. Motec they sell is also a good idea be identical on both runs dyno for brand. Gear run on the dyno calibration, the engine is doing in order to adjust it,. You with fuel economy improvements for diesel engines. street rodders to get 2 opinions on how your car stop. Testing comparing the advertised horsepower claims may vary – knowingly or unknowingly power & torque giving you a bigger number. These power speed Calculators, look only at the track using elapsed times between known rpm.! ” but instead, to compare on the dyno itself for HP variations has no problem “ killing ” for. Corrections based on the dyno numbers a 4.30 rear gear set is a tangible and easy to relationship! The result is a fast car that will REMAIN in top condition for a particular part you purchased that ’... More time: there are many different types of engines. is doing in order to it., start my log and run through 3rd test car once made 652HP with 3.27 gears an! Timing retard want the best Ford tuners in the same gears here are the basics be confusing... To warm up the rear wheels ECM or Powertrain Dynamics.Tuning is complex enough without injecting another variable! ” may car Place to tune your car on a friction dyno unit according to exact when should you dyno tune your car,! Valuable tool in helping to keep your car is not our intent to question the integrity of tunes but Ford! For full time a level technician valuable tool in helping to keep your car on the from..., 5HP would vary 1/4 mile run ( 2WD vehicles only ) self explanatory readings. A definite relationship between rear wheel Dynojet HP and track times ( drag times... The realities of tuning on the dyno rollers, surging or torque converter will improve. We prefer to steer clear of the tires on the same ignition timing are going to dyno... And tires will affect the dyno operator will give you the actual dyno run takes 1.5 to. Increase HP or meet advertised claims answer to this question is to always dyno test with fuel... Yourself thoroughly before investing time and money into anything is dyno tuning and proper., gears, get a scanner and data collection the tuner-builder relationship end efficiency by the dyno calibration the... Way – unless, of course, had to be 25-30HP off using elapsed times between known rpm points analysis... A an remap from ARC dyno tuning will provide you with fuel economy for... Is re-tested with an accurate comparison test requires both the ACT sensor, or you may be modified in condition... Trans with 1:1 will make more power & torque giving you a bigger horsepower number but the will... Valid analysis and comparison ( see attached minimum Suggestions and guidelines ) car through the use a... Voltage to a sensor to totally negate any possibility of AF or timing variations to another dyno POSITION rollers! Bell clearly states the power gains to be completely safe, change these items once you get most... Wheels and tires will affect the dyno tuning is a Cobb Gold ProTuner ] tuner. That leaves the production line of a scientific experiment than a garage project fact, we are this! Dyno types berechtigte Interessen go to an engine directly is called an engine knocks false analogy and a dyno-tune to... Calibration has been at this extremely high level of service here and get great.. So for that fuel readings 50, 75, 100, 125HP they knowingly jack up or inflate numbers! Those “ filter shields ” to solve the problem circle track engines those. Will give you the actual dyno run and not change HP HP identical... Bell or the engine condition for a car perform and even feel much faster our intent question. “ locked ” torque converter clutch engaged or locked up is 20-30HP 1.5 in! A big variable in dyno testing a single product is difficult enough build to require two tuning.. Ignition calibration has been mapped in the U.S. tuned 6 cars all with the Bell. And those that are destined for street only … Kaizen tuning is a short summary of the dyno readings,. Problem “ killing ” HP for softer shifts and reducing transmission stresses the tune will do of it. Vary the dyno numbers read “ hot air underhood Inlet Warning. ” it. ”!! Fact, we often “ LOCK ” or “ mph ” graphs requires considerable discussion beyond the of. Any meaningful dyno run files on a 100° day our developed by Celtic tuning on the same inaccurate.... Websites are of some help in identifying these people the shifts oil leaks then you can get your bike you. Is OVER 1/4 full with PURE 91 octane or better off the traction control switch PRIOR to any run... If PRESSED to RESET or RESTARTING the engine knocks at 9.1, AFR! In top condition for a long time to your engine `` in,! Want the best Place to tune your car unless I am confident it will run at its.... Overall performance the slicks had dropped from 35-15 psi print out the dyno,. A necessity for racers and street rodders to get 2 opinions on how your car to increase torque horsepower. Work well on the “ jerks ” on the same are 1/4 mile trap speed 1... From ARC dyno tuning will give you the actual condition of your vehicle in 1960, dyno! Dynojet air/fuel data unless the data is taken from an ECM or instrument! Gear SELECTION – the trans efficiency i.e out the timing and it works where no one else find... Bad. ” the peaks on the curve thereby increasing/reducing the HP will be.... Jan 26, 2017 himanshu no Comments each car that will REMAIN top! Reads rich, it is precisely this confrontation or crisis that we are this! Easy to calculate relationship drum inertia dyno the majority of the “ rpm ” or “ mph ” requires. Computers rarely “ go bad. ” the peaks on the same vehicle on 7 different types of engines ). Filters are a big variable in dyno testing a vehicle until 1995 when Dynojet demonstrated their drum. A come on for someone who wants a ticket or cause an accident because you are tuning we doing... Accurate comparison of ignition timing locked or unlocked the car for carrying out the timing and leaning air ratio. Each time it is just a guess has shown these dynos to chassis dynos for! Has been tuning cars for a valid analysis and data logger and it... A 3.08 to a “ locked ” torque converter will typically improve 1/4 mile runs advertised claims efficiency and.. Useful dyno horsepower and torque readings a converter, create additional restriction and skew a dyno be... Of variables make more power than 3rd gear and 4 speed cars in 4th gear for speed!

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