RE: Can an exhaust leak cause performance problems
Im not a mechanic but im pretty sure you will lose out on your stang's performance. I had a mechanic install my racing clutch and when he put my h-pipe back on hey screwed up my flanges and causeda major exhaust leak that was located between my headers and h-pipe, and when he started my car it sounded like an old beat up 52 chevy. Sounded horrible it puttered and idled all weird.
"Your Ricer fits perfectly in my rear view mirror"
2000 Mustang GT
K&N FIPK CAI
King Cobra Clutch
Steeda Tri-Ax Short Throw Shifter
Black Bullitt Rims (17x9 Front) (18x10 Rear)