The resonator will deff. make the car quieter, it may add a little although I don't know if it will add power, I don't think the cat will help with toning the sound down, although it will add some power and allow the air to flow freely. I am going to install a Magnaflow hi-flow cat, or magnalfow resonator in place of the stock cat.
2004 fRench blue 2.3L ZX3 R.I.P IAN C. WEIDNER March 31st 1986 - Eternity I Strive in this world for you and of cource WE'LL HOOK UP ON THE OTHER SIDE
-Focussport cool-flo intake, Draxas 4-1 race header, 2.5" flex pipe, HKS hi-power exhaust, BS deleted............................ that's it for now
-Crane IIs, Eagle rods, Supertech pistons and Cossie intake manifold on the way
Last edited by SoCalDuratec; 04-17-2005 at 03:19 PM.