Make my mustang faster!!!!!! help....?

Question

I have 2003 Mustang GT Convertible.. I have 75mm throttle body on it a BBK Cold Air intake.. BBK underrive pulleys... and im about to put a 3.73 in it... I need more ideas.. im not wantin to spend more then 400.. for now

Answer 1

Skip the 3.73's and go for 4.10s . Get an exhaust but don't expect huge gains.  Skip the shorty headers, get long tubes, but again don't expect huge gains (the stock manifolds on P.I. 4.6's aren't really bottlenecks)  an H pipe will yield better torque, an X pipe will yield more high RPM power. Also a tuner will help you get the most out of the mods you get. Unfortunately most of this stuff will cost more than $400.  

Answer 2

well go buy Summits cat back exhaust H pipe and some headers.

Answer 3

I would probably look into an aftermarket exhaust, or headers. It will set you back around 400 though

Answer 4

CHEAP CHEAP CHEAP, cost you about 100.00..for (2)  2.5IN 45' elbow pipes... CHOP OFF THE CATS! replace them with straight pipe, and replace the mufflers with 1 CHAMBERS. keep the stock tips!

I DID IT.. LET THAT PUPPY BREATHE!

Answer 5

put a chevy engine in it!