Mustang dyno correction factor. 962, a correction reduction of 3.

Mustang dyno correction factor Jul 2, 2015 · The Mustang dyno can also measure the air/fuel ratio while testing. If that is standard then not so much. Sep 26, 2009 · Correction factors allow a car to make the same power on a dyno no matter what the atmospheric conditions are. The purpose of using “corrected” dyno data is that it allows the power output under different temperature, barometric pressure and humidity conditions to be compared. 09. Whether you need real dyno graphs or fake dyno sheets, our tool allows you to input your data and generate professional-looking results. 1765 Otherwise, over a fairly wide range of pressure (28-30 in Hg) and temp (50-100 °F), the relative difference between SAE and STD is a little over 2%, on average. Often times it's hard to really explain how this can have an impact on how you evaluate a Jun 27, 2006 · The dyno computer says Okthe current baro is XXX, the temp is XXX, humidity is XXX, and formulates a factor based on tables. speed" so I assume that STPPwr is the C orrected wheel power (corrected for pressure and temperature), therefore WhlPwr would be the actual recorded HP before the correction. A correction factor greater than 1 (such as 1. The dyno correction factor is simply the mathematical reciprocal of the relative horsepower value. Nov 12, 2004 · The Mustang Dyno had the ability to artificially load the rollers to simulate car weight at speed, more closely representative of what is take to keep a XXXXlb car moving at speed. Aug 9, 2006 · Whats the correction number for a mustang dyno to a dynojet? I've a experienced person post this in some local forums for correction factors. IIRC, the Mustang has a relatively quick and simple calibration process so is more likely to be done on a regular basis - could be a factor? Sep 18, 2018 · ProCharger has (2) climate controlled dyno cells (one with a DynoJet brand, the other a Mustang brand), that maintain about 72 degrees and very low humidity. The shop that installed my supercharger used a Mustang dyno. The Mustang, Dyno Dynamics and Dynojet units are eddy-current dynos that provide load via magnetic resistance (like a giant electric motor). The correction factor used for the E36 and the dyno type seems to be a hot topic, so I thought I'd create a thread for it and start off the discussion. MD: A Mustang Dyno ONLY uses SAE Corrections. Feb 15, 2014 · I think what the other poster was referring to is the weather correction factor, which is what gets you from the uncorrected numbers to the STD or SAE numbers when taking ambient conditions into account. Dec 23, 2013 · Mustang dynos can give you uncorrected and SAE corrected. e. " EXAMPLE 101 Dec 3, 2015 · Crazy my 3. This can only work if the ACTUAL conditions are recorded at the time of the dyno test. 1495*CFstd - 0. 9 lb-ft at 3,633 rpm. I have a dyno run I had done on a DynoJet recently and it has a SAE correction of 1. Any input?? As long as the final gain is there say, 150rwhp increase, should I be worried? Final mods are 3. That’s because you want to be able to tell over time, a consistent way to measure performance gains made by upgrades you made to your car and this is the only way to do it. 05 on the dyno run. But who knows. The correction factor was 4% (correction factor 1. 882, the correction factor to compute flywheel numbers from the RWHP and RWTQ was 1 / 0. You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. One reason for some of the difference is that MazdaEdit uses 0. Mar 8, 2010 · Dyno Jet correction factor? Dyno Results Dec 27, 2012 · STD shows higher results than SAE. Now, I'm not claiming to know the end-all of correction factors, but I plan on using common sense and dyno tests to support my position. The measured horsepower and torque are multiplied by the correction factor to obtain the corrected values. Oct 25, 1995 · The dyno shop should have your run on file still. The derivation of this correction factor is based on the equation for 1-D, steady-state compressible fluid flow through an orifice whereby the mass Jun 13, 2006 · Accordingly, if you know the STD correction factor, you can compute the SAE correction factor as follows: CFsae = 1. Mar 7, 2003 · But then, thats specious too. Lo and behold, if you multiply WhlPwr by the correction factor, you do indeed get the STPPwr. Sep 21, 2023 · If that is SAE correction factor than 428 from the auto is good. 134. Shawn 2004 Comp Orange Cobra Vert, 2000 Cobra R, 1995 Cobra R, 1993 Cobra, 2020 F150 Roush SC 5. Unless they have some weird correction factor its within 3%HP and 2%TQ. So was here to ask for peoples imput. Fact is – in order to get the best tuning results, you need a dyno that applies an accurate load, like the car would see on the road Jul 26, 2006 · Agreed. The dynojet CF is 1. Humidity plays a large factor. Perfect for car enthusiasts, tuners, and anyone who needs dyno sheet generation. Jun 7, 2011 · According to Steve Nichols at Dyno Dynamics, Shootout mode does two things: 1) Use pre-configured dyno settings and present these settings in the chart. If that is the objective, rather than trying to compare your car to others, then it doesn't matter what machine you use as long as it's properly calibrated and used. With that info, combined with the correction factor, it's almost impossible to fudge dynojet numbers. Ask them for a copy of it and or ask them for the correction factor used. Both have correction factors but Mustang (or any load dyno) should give a better real world reading. They can do this through a few different method’s, but the most common are by looking at Then there is the use, and abuse, of 'correction' factors. So if you car is on an inertial Dynojet using STD correction you can get much higher numbers than if it was on a eddy-current Dynojet or Mustang Dyno using SAE correction. You will also see AFR graphs scaled DOWN to hide flaws in the curve. Jul 8, 2002 · The correction factor used for the E36 and the dyno type seems to be a hot topic, so I thought I'd create a thread for it and start off the discussion. 90 * 0. 90 for drive train efficiency. This calculator converts your dyno run into corrected SAE, MSA and STD horsepower. For the past 50 years, Mustang Dynamometer has offered clients a world of testing solutions and technical expertise Mustang Dynamometer offers the best choice for serious performance tuners and aftermarket product developers for a reason: they know the facts. Mar 30, 2008 · The dyno is only as good as the operator. These correction factors are an attempt to correct for varying atmospheric conditions such as humidity, barometric pressure and air temperature. Mustang dynos do have more assumed loss than a hub operated dyno. They will usually be much lower compared to dyno jet (inertia based). Jan 13, 2009 · Temp, humidity, Baro. Registration Sep 2, 2020 · Are you sure, when you dynod in the 50s, a correction factor was used? The SAE CF corrects to 77°, so if it was in the 50s, on the same dyno, with similar humidity and barometer, it would show more power, with no CF. . STD, or Standard correction factor. Same car, same dyno, different correction factor? You just gained 30 horsepower by changing a setting. Registration Apr 6, 2003 · It can make quite a difference, and an unscrupulous dyno operator could potentially "doctor" the HP/TQ numbers higher to satisfy a customer by entering "pessimistic" atmospheric conditions (or a higher elevation than reality) to increase the degree of correction. Jan 3, 2012 · Northern California - Dyno jet vs Mustang Dyno - i took my car down to a local shop where they put my car on a dyno that is similar to a mustang dyno. 962, a correction reduction of 3. Mar 1, 2011 · The dyno was using a 0. Jun 12, 2006 · Turbo correction factor Skipping all the math, (if someone really wants to see it let me know), for a turbocharged engine with a constant boost pressure, (after the turbos are fully spooled), it can be shown that the indicated power and torque would scale with pressure as αp = (Pref + Pb)/ [Pdry (1 + Pb/Patm)] May 22, 2017 · In Mustang Dynamometer chassis dynamometer software, when an engine-crankshaft relative torque value is reported, it is simply a calculated value as described above. This assumes there was a door open in front of the dyno, if in a more closed shop, then the shop temp could have been higher than SAE or STD temps, but for it to correct 10hp, that would be All dynos have some sort of correction factor available while some may offer a selection of different correction factors. Apr 10, 2025 · The Dyno Correction Calculator adjusts engine power and torque numbers from a dynamometer (dyno) test to match standard conditions. The 2024 Mustang GT has been back at LMR HQ for less than 24 hours and we've already put it on the dyno! Use Station Pressure reading and not the 'corrected' barometer reading. May 1, 2004 · In this chassis dyno guide HOT ROD answers some frequently asked questions about dyno testing including comparing types of dynamometers and explaining what factors can impact your results - Hot May 20, 2018 · It's interesting that you would post this, as I just posted a dyno chart last night, and it's depicted in STD correction factor. Our question of the week this week is, what is a dyno correction factor?If you have ever had your car tuned, or if you have ever wanted to know how much powe Apr 22, 2012 · The "CF" is correction Factor, yours was standard, not SAE. Aug 5, 2007 · Ok, so in the TMS forum, I posted a thread similar to my "dyno-tweaking is worth it" thread on this forum, and was asked to show the tabulated data for Apr 25, 2011 · I finally got protuned. Oct 6, 2019 · EDIT: Mainline dynos are load based like mustang dynos. This will tell you if it took away or added to your stuff. Mar 21, 2013 · The Mustang dyno should be capable of using SAE (J1349) or STD (J607) correction (and others), it just comes down to what the engineer selects when each pull is done. Your numbers looks similar to mine using the mustang dyno correction factor of . The correction factor when road-testing at Keystone Raceway was 0. Oct 28, 2011 · There is alot more to correction than IAT. What the correction factor does is use math formulas to eliminate the weather and altitude variances on your engines performance to obtain real world comparable numbers you can use to more accurately gauge your cars performance. Pressure plays a large factor. Also ask for your uncorrected numbers. The dyno operator cannot access the “eXtra correction” function (referred to in the thread as CF). They level the playing field by standardizing the atmospheric conditions under which a vehicle is tested. , at a given reference ambient temperature and absolute dry-air pressure). 05 percent). 882 = 1. 24 correction. "Thermodynamics is a funny subject. And my position is: The correction factor used for drivetrain losses should be the same no matter what kind 14. The Standard correction factor corrects the dyno numbers to the international scientific standard conditions of 59° F, 29. This next part works the same for Cars and trucks---DJHP stands for dynojet horse power True HP Scale DJHP +/- 2% multiplication factor 50 True HP Mar 20, 2001 · Looking at the graph, they were using a SAE correction of 1. Originally, all of the major US auto manufacturers were in or around Detroit Michigan, and the dyno reading taken in Detroit were considered to be the standard. We run a Dyno Dynamics (load) dyno in our shop, and started out supplying customers with straight-up numbers. 0 whipple, cai, accufab, xpipe, borla catback, tune, for the power mods, clutch, fuel, and suspension upgrades also. 98 = 0. :willy: I did a little research and found a good read: There are few standards used in the dyno world Nov 2, 2005 · Proper use of dyno correction factors (a must for those professional tuners) Proven Power Bragging May 17, 2012 · These correction factors do not apply to force indiction cars, well people apply them but the numbers are inaccurate. Mar 6, 2004 · Are you saying that the Mustang dyno HP number is the power at the rear wheels minus the power to overcome rolling resistance and wind resistance to give the net power left to accelerate the car? Aug 25, 2023 · Y'all should know us well enough by now; we move quick when it comes to this type stuff. His correction factors would be different from mine since my math is a little different from his. SAE and RPM. 09 CF and smoothing of 6, with a completely stock Fiesta ST with 100k miles I'm making about 175whp and 232wtq (compared to 151whp and 202wtq) on 93 octane. Personally I am a big fan of uncorrected numbers mainly because I couldnt give a rats ass about comparing to some one else, Id like to see what hte car puts out at xxx conditions at whatever mod level. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and Jun 27, 2006 · Whats the correction factor when using a mustang dyno?? which one shows the real numbers??? Ray Nov 21, 2025 · Sounds scientific, right? Except there are multiple correction standards: SAE J1349, SAE J607, STD, and more. Feb 17, 2004 · In reality it's making 430 HP at 90 degree IAT,a dn the correction should bring it to 460 if the sensor was properly located. Ive got a guy thats going to compile a BUNCH of dynojet data or me so we can work on getting an even MORE accurate result than it already gives. 5, and the 340 would translate to only 306? Nov 2, 2009 · Dynojet vs Mustang Dyno Proven Power BraggingWelcome to the . Some shops exploit this. 1 Derivation: The purpose of the dyno correction factor is to adjust the measured power (and torque) to values that would be achieved at some reference air density, (i. com Subaru forum. Dec 25, 2006 · C5 Tech - SAE vs. Jul 15, 2010 · Dyno Dynamics vs. This is the "Show me the Carfax" version :lol: Boost graph included. 04) This is also why I chuckle when people use trap speeds to validate the dyno numbers. My car has been on one Mustang Dyno and two Dynojets. And my position is: The correction factor used for drivetrain losses should be the same no matter what kind Jan 25, 2010 · What kind of drop in dyno #'s can be expected from a Mustang Dyno over a Dyno Jet Dyno? Feb 9, 2018 · STD correction will read a higher corrected number than SAE, but both factors use a higher temp and lower baro reading for the correction than your day had. Then it takes the SAE or STD correction factor and divides it by this formulated factor to get a final factor. Wish they showed what correction factor they used. Feb 6, 2025 · The dyno correction factor takes into account all of the effects of temperature, altitude, atmospheric pressure and humidity to arrive at corrected horsepower and torque values. 95. 9595 (removing 4. The correction factor is used to standardize numbers from different locations. Some of us that own "stingy" dynos, just do what we do everyday, and whatever the numbers are, they are. Which is the real deal? is there a Dec 18, 2007 · I was happy with my mustang dyno numbers given a 10% correction factor making it closer to what a dyno jet would put out. STD on the dyno - What is the difference in SAE and STD as measured on a dynamometer? Which one do you use to compare rwhp and rwt numbers with others? Aug 18, 2009 · All runs were made using SAE J1349 correction factors. A Mustang dyno also has air density correction factors, and you can specify SAE, etc. Oct 27, 2011 · It is true that uncorrected are the numbers it made that day (isn't that obvious) but the correction factor (which SAE is pretty accurate to a certain point) allows you to compare dyno numbers where the pulls were performed under different conditions. Sep 13, 2011 · Last month, we covered how a dyno operates and some of the mathematics involved with recording and calculating the coveted horsepower and torque numbers that enthusiasts lust after. 8 pulley, stock headers, off road h, gt500 mufflers on 93 made 610hp 510tq on a mustang dyno that's known to hurt feelings Track numbers to collaborate dyno#'s Not second guessing you just looking to take out dyno correction factors Sep 27, 2014 · The mustang dyno correction factor is 0. By joining our community, , you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. 02 for tire loss and 0. And my position is: The correction factor used for drivetrain losses should be the same no matter what kind We often get questions about dyno correction factor and using uncorrected numbers vs corrected numbers. This is the one situation where the dyno really can lie. Resulting in an assumed 0. It is a multiplier. SOME eddy current dyno owners use these operator entered correction factors to inflate numbers. Despite months of attempting to educate the masses on a) the slew of important and valid information we could provide them regardless of peak numbers and b) the differences between intertial and load dynos, we ended up caving in and using a 17% correction factor. In the newer digital dyno software, the ctrl-X shortcut is no longer available. Fact is, numbers sell. By joining our community, , you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features Oct 17, 2000 · The relative horsepower, and the dyno correction factor, allow mathematical calculation of the affects of air density on the wide-open-throttle horsepower and torque. The shop that is installing my headers and mid-pipe uses a Dynojet. Correction factors ensure that dyno results from different locations, times of the year, or weather conditions can be compared fairly. Mar 6, 2006 · Dynamometer correction and turbocharged cars Off-TopicWelcome to the . 09 on vdyno and I'm stock on E30. Jan 23, 2023 · The dyno correction factor is simply the mathematical reciprocal of the relative horsepower value. com Forums SVTPerformance's Chain of Restaurants Pics and Videos Buffet Apr 12, 2008 · The correction factor for the day when testing was performed on the Mustang dyno was 0. SAE is usually a stricter factor, higher correction factor, lower HP/TQ reading. No “correction” factor has been applied to account for drive-train losses. Jul 22, 2009 · C6 Tech/Performance - Dyno Sheets - SAE vs. Sep 22, 2018 · A chassis dynamometer, or "Dyno", is tool that calculates your car’s horsepower and torque output. This was in pretty good weather as the correction factor had to subtract about 20rwhp w both on SAE. What would the difference be? I don't know what that factor number actually does to the results. I'm not sure if one is better than the other, They're just different. These correction factors are used by dyno shops to correct for nonstandard temperature, barometric pressure and humidity. As conventional correction factors such as SAE, STD, DIN, etc all are based on various ambient conditions, the chosen correction factor takes into account ambient conditions such as humidity, temperature and absolute pressure. Do all of the Cobb shops use the same dyno and correction factor? I suspect they do, and I suspect Cobb uses SAE, but need to know for sure or my results will not be comparable. Mar 3, 2003 · The correction factor used for the E36 and the dyno type seems to be a hot topic, so I thought I'd create a thread for it and start off the discussion. And my position is: The correction factor used for drivetrain losses should be the same no matter what kind Mar 10, 2004 · I think the main use of a dyno is to follow modifications you make on your own car and to tune it optimally. Dec 10, 2004 · So what's what? The graphs say "STP corrected Power vs. But even correction factors are only so accurate. I have seen it listed on most corrected dyno sheets, near where the weather conditions are listed (typically in the lower left corner). I would assume Hennessey would be using correction factor. If you gain HP from cooler IATS, it wont mean the correction factors change. The more the car makes with cooler IAT's, the higher any given factor will be CPR. STD correction generally reports 4% higher numbers. So with a 1. I also use a smoothing of 6, which is a better overall average. STD numbers simply help boost the shop's ego and make you think your car makes more power than it actually does. Apr 2, 2010 · WTH is a dynojet correction factor (vs a mustang dyno)? Most people know that dynojet's read about 5-10% higher than a mustang dyno, but there's no exact correction factor! Click to expand Apr 13, 2023 · This can result in slightly higher readings on Dyno Jet. The first time you go through it, you don't understand it at all. Jan 24, 2013 · These graphs are of the same two pulls. Others like the Dynojet. The second time you go through it, you think you understand it, except for one or two small points. Because as we learned in teh other dyno correction factor thread, no two dynos will produce the same result, so what's the point in comparing dyno readings anyway between two different cars tested on different days on different dynos?! Jul 2, 2011 · The correction factor for the day when testing was performed on the Mustang dyno was 0. Mustang Dynos use only SAE. Additionally, Dyno Jet typically applies a correction factor for environmental conditions, while Mustang Dyno typically does not. So our correction factors are usually 0-5% with an average of around 3%. The before and after is night and day from the Cobb Stage 2 maps but I'm still a little confused on something That is the Correction factor Obviously the numbers from my dyno are substantially higher (374ft lbs of Mar 7, 2004 · If, as you said, you always showed 10% less power on a Mustang dyno, the 390 would translate to 350, the 375 would translate to 337. I double checked the numbers and they are exactly the same (weight, gearing,diameter). (17% since the Dyno correction calculator Correct your engine's power output for different atmospheric conditions using our easy-to-use calculator. Jun 10, 2004 · The relative horsepower, and the dyno correction factor, allow mathematical calculation of the affects of air density on the wide-open-throttle horsepower and torque. Correction Factors Correction factors are used by both dynos to account for varying atmospheric conditions such as temperature, pressure, and humidity. Apr 14, 2002 · Say you dyno on two different days that have substantially different ambient conditions. 92" Hg barometric pressure, and 0% humidity. Dynojet Proven Power BraggingWelcome to the . Nov 20, 2009 · This engine loading factor (and airflow dynamics, which is beyond the scope of this article) can help explain why some people have dyno'd identical to a friend's engine on a Dynojet dyno but got different results on a Mustang dyno. With any dyno testing there is a need for correction factors that are applied to the raw numbers the dyno actually measures. 98 for the Mustang dyno correction factor. The overall gearing between the vehicle’s engine and the When evaluating engine performance using a dynamometer (dyno), it's essential to understand the role of dyno correction factors. Apr 2, 2016 · I'm no dynamometer expert but my understanding is how they are configured, the Dyno type/specification (mustang vs dynojet; drum weight; etc), and correction factors can play a role in output. 5 hp at 5,451 rpm and 626. Aug 26, 2023 · 2024 Mustang GT Dyno! Multiple Pulls & Correction Factors Explained | SVTPerformance. The "Smoothing" takes out the peak fluctuations on the graph, some say to use 5 as standard, it will be the highest correction/lowest HP/TQ reading. My numbers were 246hp and 284 tq with the 1. Oct 10, 2016 · I keep seeing people posting their vitual dyno logs, but at the top everyone is using "DynoJet" instead of "VirtualDyno" as their "correction factor" which was proven to be much more accurate for their cars (gives a lower value). 11 Tactical. Jan 20, 2007 · Yes. Jan 9, 2008 · mustang dyno #'s to dynojet #'s Proven Power BraggingWelcome to the NASIOC. 98 percent correction factor that actually reduced the raw numbers from 577. Oct 17, 2012 · Density Altitude: 1952feet Virtual Temperature: 77F Vapor Pressure: 0 inches Hg Dyno Correction Factor: 1 A car making 672RWHP STD correction would be making 645RWHP SAE. So when a car makes 1,071 with a 2% correction, you know she is making some HP! Jul 10, 2002 · The correction factor used for the E36 and the dyno type seems to be a hot topic, so I thought I'd create a thread for it and start off the discussion. Dec 15, 2002 · The correction factors on my dyno runs were 0. 02) means your numbers were corrected upward 2%. 8 percent. Next time you are on the dyno insist for SAE corrected numbers. Either ask what the raw numbers are or else find out what the correction factor is. This is why some refer to the Mustang Dyno as the “heartbreaker”. STD and MPH (insert your own version name here) So Nov 20, 2011 · The correction factor for the day when testing was performed on the Mustang dyno was 0. Apr 24, 2015 · All of the above information is posted to show you the differences between different correction factors and different ways of showing the dyno plots in order for you to be a bit more knowledgeable when it comes to this subject. I attached the dyno numbers from the Mustang. 3 days ago · You will also notice a smooth factor (up to 5) which dyno operators use to make the power curves and any other data displayed, such as AFR, seem more accurate and smooth. the numbers that came back were very diffrent from the dynojet my car was on a few months ago. Some shops know this. They are kind of tuning/dyno experts. those numbers will Jan 24, 2004 · Whatever you pick as a correction factor, you will want to stick with it as you continually Dyno your car over time. Some say a Mustang dyno is better and more accurate. A good dyno operator will notice their dyno is reading low and adjust the dyno loss % parameter (dyno correction factor), and correct the final output number. STD Correction - I was looking through some dyno sheets and noticed that some shops use SAE correction values on the Dynojet while other use the the STD correction values. Sep 14, 2016 · But if you want more useful numbers then use the correction factor. 24. Jun 26, 2010 · Cant add them from VDR into my app. Jun 15, 2018 · FYI, my UNCORRECTED numbers were 576 RWHPor more specifically, the TRUE RWHP my car makes in Phoenix, AZ at altitude. Aug 1, 2009 · The correction factor for the day when testing was performed on the Mustang dyno was 0. Since cooler air and higher air pressure both result in more air molecules entering the engine, an engine will produce more power under STD conditions than under SAE conditions. These are nonsense numbers of course (except the the correction formula), but they give you an idea of how a dyno operator can make their dyno read whatever they want. I suspect a pro tune would net you better results assuming you have no hardware issues. The fact is that I agree with you, and STD is not a good factor to use. wipyx maeii yvantygr awatd ufvov vtynqt nggpcmg hbksh zrlivxce qiujpy pmuuo wzpv dfcx wiyp zqjjp