How do you guys like your headers, are they worth the performance. I was browsing JBA and they have dyno proven tests, sound good, and are said to gain Hp, Torque and gas mileage.
Ive heard they are alot better for your engine as well.
Anybody have any negatives? Positives?
I have a flowmaster40 right now and it has helped a little on performance. But not a great amount. Id guess 10-12 hp and maybe 1mpg