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      02-20-2013, 10:50 PM   #43
SGMe90
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Drives: 08 SGM e90 M3, 6mt
Join Date: Dec 2010
Location: MD

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Quote:
Originally Posted by M3takesNYC
Something is really off, atleast with the first two graphs. Your torque is falling off way too quickly after 7k and your power line flattens out at 7k-8400 much more than it should. Look at any other healthy car's dyno plot, the horsepower curve is completely linear until 8400.

Its like the top end of yours is running out of air. Oddly your last dyno looks a bit better.

Something is not working right on your car as I have never seen a dyno plot flatten out at 7k.

I would get a BT tool and log your camshaft lift and compare it to the specs of what it is supposed to be. Second I would look at spark and timing to see if its hitting timing targets up high.

The numbers themselves are good but when the shape of the graph is off that is much more of a concern.
The reason is probably because I still have the rear cats and OEM xpipe. Supposedly very restrictive. I will end up upgrading my xpipe later but will have to get resonators to quiet her down. I do have a bt cable and will try to log when I get a chance but she is running strong. Thanks for the advice man
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