Thread: ZR-1 Headers
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Old 10-09-2005   #16
Jeffvette
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Default Re: ZR-1 Headers

Quote:
Originally Posted by Z Factor
As to the HP gains, I'd say you are looking at about 40 hp increase.
Hopefully the 40 you ar guessing is at the crank.

You will see the biggest results up at higher RPM. The power level will not fall of very much from 6K-7.2K
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