[mx6invader]

I searched and got random things about headers but how much hp does it really give you. Not specifics but a ballpark figure. Thanks Dave

 

[parisifal]

With a CAI and exhaust expect to see a 10hp gain from the headers. The better gain is from the better top end power and power band increase.

 

[donfromnaples]

i also heard a lot of different things about headers. some guys said that they are worthless, no gains. some other guys say that they will give you 5-10 hp but only in higher rpm range, losing some low end. anyway, i thought someone once posted hp gains for various types of headers, but i can't find it anymore. maybe it was at probetalk.com anybody remember that old post?