Quote:
Originally Posted by mr-karim
So I dynoed my car. The car did show over 600WHP with no problems, but after 6000rpm a computer in my car started thinking that it was doing a burnout, therefore it didn't spin any further (fuel cut early).
To get an exact number, I'll have to bring it to AWD dyno... Estimate is 650WHP.
Yes the traction control was off.
I am using 94 octane.
Charts: (1tun with pedalbox off, 2 runs with pedalbox on)
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Looking at your graphs it really seems to have serious issues in the midrange especially...
Your engine makes 475lbs.ft at 4600rpm. The stock engine in post #21 makes a nice and steady 500lbs.ft from 3k to 5k and then gradually drops to 400lbs.ft at 7300rpm
http://www.6post.com/forums/showpost...5&postcount=21
A Manhart M5 on the dyno here:
http://f10.m5post.com/forums/showthread.php?t=830347
It has 650ft.lbs at 3k and drops slightly to 630ft.lbs at 5k and falls gradually to 460ft.lbs at 7200rpm.
In the midrange the Manhart makes a whopping 150-175lb.ft MORE than you do (35% more)... Your engine even makes less torque than a stock engine (although comparing results from different dynos doesn't provide a definite answer on this). Anyway, the shape of your torque curve is not right for the S63 engine...
Here is how the dyno graph is on a BMS Stage 1 M5 (and how it is supposed to be...):
http://www.n54tech.com/forums/showthread.php?t=22393
Please listen to gmd2003 and others that have pointed out a possible knock situation. Something really isn't right in the midrange there... Don't risk your engine!!!