So on a 4 banger EX by add a cat back, you will only notice about 3 more horse? Is that to the wheels or at the crank? Because if it is to the wheels then that still isn't too bad. I mean that should mean about 8-10 motor horsepower.
Originally Posted by uclaccord
header helps most if u already have i/e...stock everything is pretty restrictive...less so if u have EX...but that 90 degree turn is the worst...the smaller the angle the more restrictive...but an exhaust won't net u much on a 4 banger...like 3 hp at best...so it's mostly sound/looks...and whaddya mean by SUPER...i think intake is a good place to start