I'm mike my ride is a 2006 mustang 4.0 litre. Can anyone out there tell me if I put on true duels (with 2 cats) a cold air intake ,and changed the pulleys plus a super chip would i mess anything up (like idiot lights going on). Also what is the best sounding exhaust system out there with a real nice low growl

 

Welcome to the forums!!! Look at the 6 cylinder or 2005-2007 forums and see if they can help you out.

 

welcome!

 

I am clueless, but...Welcome to the forums!