Post by
PerfectApex »
https://forums.nicoclub.com/perfectapex-u59093.html
Tue Feb 05, 2008 5:33 pm
Stillen is one of the loudest but more importantly the fit and finish is awesome but costs around 1200.00. You will not get much hp gain out of a cat back system alone. Torque increase is far more important than hp and after market exhausts are sold mostly for appearance and the sound, along with some weight decrease from the oem crap. Do a search on here and you will find tons of postings about this subject.