Difference in dyno numbers normal?
Difference in dyno numbers normal? So I had my 02 SS dynoed it made 403 and 386 Mods are long tubes magnaflow full exhaust cam and underdrive pulley ls6 intake ported tb and maf with lid. Stock 323's. Stock untouched 241's Now I had it re dynoed with 410's same mods and had a significant drop in numbers 368 and 345 I was told that this was normal?
Comments?
Comments?
TECH Enthusiast
Joined: Jul 2012
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you can fiddle with a mustang dyno to make it read higher or lower and many many shops do just that to keep their customers happy. He probably had you pumped up on the earlier one, then had the dyno set up properly for the 2nd... A properly set up mustang dyno will read 8-10% lower than a dynojet and that is exactly why people mess with them to make them read higer
TECH Enthusiast
Joined: Jul 2012
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unless you dropped a cylinder, or have some kinda serious drive train problem, it was the difference in how he set the variables on the mustang dyno... as i said before they are easily manipulated
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TECH Enthusiast
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8-10% is the power you are missing and that is exactly what the difference between a dynojet and properly set up mustang dyno... Just go dyno it again and have him pump up the cf for you and you'll get your numbers back..
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Verdad Gallardo TECH Enthusiast
Joined: Jul 2012
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i would take it o a shop with a dynojet, they still can vary by as much as 30 hp, but are at least not really able to be manipulated as much. Mustang's are just better for tuning not getting numbers to be proud of
Adjusting the calibration on the mustang dyno shouldn't make it inconsistent unless they are fudging weather correction. Unless they are messing with the calibration in between vehicles which would make it impossible for them to ever get consistent numbers.
TECH Enthusiast
Joined: Jul 2012
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many people bump up the cf on mustangs to make them read closer to dynojets to please their customers, since no one likes seeing low numbers. Since op lost 40rwhp changing gears his prob is most likely related to dyno calibration unless his car feels really weak now and has some kind of mechanical prob. He didnt mention it feeling slower. If i'm not mistaken there are other things that can be manipulated on mustangs besides the weather cf in the background that you don't even know about unless you are the operator. /i could look them up, but does your shop use a mustang and if so what are they?
many people bump up the cf on mustangs to make them read closer to dynojets to please their customers, since no one likes seeing low numbers. Since op lost 40rwhp changing gears his prob is most likely related to dyno calibration unless his car feels really weak now and has some kind of mechanical prob. He didnt mention it feeling slower. If i'm not mistaken there are other things that can be manipulated on mustangs besides the weather cf in the background that you don't even know about unless you are the operator. /i could look them up, but does your shop use a mustang and if so what are they?
