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      11-19-2012, 07:50 PM   #23
FogCityM3
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One way to find out: get the e-flash...dyno your car before/after the flash and you can see for yourself.
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      11-20-2012, 01:54 AM   #24
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Yeah, it's hard to compare numbers when you don't have a baseline to go off. I'm going through the same dilemma and gave up cause i don't have anything to compare. I'll just SC and call it a day.
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      11-20-2012, 02:07 AM   #25
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Quote:
Originally Posted by bape_sta206 View Post
Yeah, it's hard to compare numbers when you don't have a baseline to go off. I'm going through the same dilemma and gave up cause i don't have anything to compare. I'll just SC and call it a day.
yeap, the funny thing is all this time I thought I was around 360-370whp.

The only car I see with crazy n/a result is mike's car. 430whp wtf . He must have an special motor.

http://www.m3post.com/forums/showthread.php?t=748613
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      11-20-2012, 10:27 AM   #26
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Originally Posted by Valentino_RS View Post
yeap, the funny thing is all this time I thought I was around 360-370whp.

The only car I see with crazy n/a result is mike's car. 430whp wtf . He must have an special motor.

http://www.m3post.com/forums/showthread.php?t=748613
I hear ya. When I took my car in that day, there was a 2012 sedan M3 that made more power than my car STOCK!
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      11-20-2012, 11:41 AM   #27
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The highest dyno numbers are from hub dynos (vs rollers), which very few tuners utilize. In addition to giving higher numbers they are also probably more accurate as they eliminate the losses from the wheels/tires (grip, strapping technique, friction, heat etc). The few hub dynos that been done peg the M3 at least in the 370 rear hub horsepower range bone stock, with ~10% drivetrain loss.

In general, when one hears about dynoing the M3 and the dashboard lighting up like a christmas tree, how can one be confident that the ECU isn't responding to prevailing conditions and detecting any out-of-the ordinary parameters and making changes to protect the engine? This would suggest that any dyno of performance modifications needs to be done with a baseline to really get any indication of whether those mods actually add power (and even then, the dyno conditions are still changing with each run).

Last edited by FogCityM3; 11-20-2012 at 01:30 PM.
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      11-20-2012, 03:32 PM   #28
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Quote:
Originally Posted by mhabs View Post
The highest dyno numbers are from hub dynos (vs rollers), which very few tuners utilize. In addition to giving higher numbers they are also probably more accurate as they eliminate the losses from the wheels/tires (grip, strapping technique, friction, heat etc). The few hub dynos that been done peg the M3 at least in the 370 rear hub horsepower range bone stock, with ~10% drivetrain loss.

In general, when one hears about dynoing the M3 and the dashboard lighting up like a christmas tree, how can one be confident that the ECU isn't responding to prevailing conditions and detecting any out-of-the ordinary parameters and making changes to protect the engine? This would suggest that any dyno of performance modifications needs to be done with a baseline to really get any indication of whether those mods actually add power (and even then, the dyno conditions are still changing with each run).
Because the tuners who do some of the reported dynos know what the lights are and what effect they may have. There is enough consistency in results. For the outlier cars, I generally question why the results were high or low. The type of dyno or settings could be an explanation. I also think some of these cars are not perfectly maintained and that most of these cars put out less power in hot weather or on 91 octane and that the dyno SAE calculation will not always fully reflect that.
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      11-21-2012, 04:44 AM   #29
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getting my DCT recall done at the dealer tomorrow at 6:30 AM , and I will decide getting retune or supercharger it.
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      11-25-2012, 02:03 AM   #30
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getting my DCT recall done at the dealer tomorrow at 6:30 AM , and I will decide getting retune or supercharger it.
so any difference?
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      11-25-2012, 02:33 AM   #31
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so any difference?
Car run like shit as of now cause tune is wipe out.
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      11-25-2012, 12:21 PM   #32
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Car run like shit as of now cause tune is wipe out.
Now is that time you should dyno it. Then put the tune back on and see if there is any difference. That's what I did. You will see an increase.
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      11-25-2012, 05:35 PM   #33
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Quote:
Originally Posted by bape_sta206 View Post
Now is that time you should dyno it. Then put the tune back on and see if there is any difference. That's what I did. You will see an increase.
Agreed! I am sure if you were to run to the dyno, get a handful of baseline runs, flash the car on the dyno, and do a ton more runs, you'll see a nice change.

Goodluck!
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