Quote:
Originally Posted by BYprodriver
For a 986 "S" that is around the most efficent engine RPM & if you are installing headers you want the pipe size to be ideal for the intended rpm range. If you normally drive on public streets RPM range is 1,000-6000 so the best overall compromise is headers that give best exhaust velocity @ 3.000 rpm.
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Ok we must have very different cars and driving styles