Header options advice needed

[Terryg]

Originally Posted by Starter986

I believe what BYP is suggesting is that for normal street driving you want to be maintaining at least 3,000 RPMs. That's what I try to practice when I'm local. I believe he's suggesting that you want to consider what should be the pipe diameter based upon that 3,000 RPM... not just some random eBay pipe.

BYP, correct me if I'm wrong.

So why would you tune your Porsche to drive it at 3000 rpm? I don't get it.

[BYprodriver]

Originally Posted by Terryg

So why would you tune your Porsche to drive it at 3000 rpm? I don't get it.

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.

[Terryg]

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.

Ok we must have very different cars and driving styles