RPI Exhaust HP Gains.
04-04-2009, 12:51 PM
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So I read the RPI exhaust for the 545i gives you 13hp. Is this at the crank or at the wheels?
Also, what kind of gains can I expect with a RPI Scoop/Exhaust Combo? I read that it should amount to about 15hp.
Thank you
-Krozi
Also, what kind of gains can I expect with a RPI Scoop/Exhaust Combo? I read that it should amount to about 15hp.
Thank you
-Krozi
04-04-2009, 12:58 PM
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to the wheels, not the crank
RPI uses a dyno dynamic IIRC...so that's why the numbers are a bit lower (slight loss of hp's from crank to wheel)...where ever you dyno, make sure you stay with that dyno for pre and post dyno's....
RPI uses a dyno dynamic IIRC...so that's why the numbers are a bit lower (slight loss of hp's from crank to wheel)...where ever you dyno, make sure you stay with that dyno for pre and post dyno's....
04-04-2009, 01:04 PM
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Originally Posted by GENEaTALS' post='836377' date='Apr 4 2009, 04:58 PM
to the wheels, not the crank
RPI uses a dyno dynamic IIRC...so that's why the numbers are a bit lower (slight loss of hp's from crank to wheel)...where ever you dyno, make sure you stay with that dyno for pre and post dyno's....
RPI uses a dyno dynamic IIRC...so that's why the numbers are a bit lower (slight loss of hp's from crank to wheel)...where ever you dyno, make sure you stay with that dyno for pre and post dyno's....
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