will not cause warranty issues at the dealership. If all turbo back exhaust's delete the cats what is the next best choice. Definitly don't want another loud exhaust though (wife will shoot me). Please provide a manufacturer and model too .
Thanks Dean

 

if you want the quietest one go with Fujitsubo RM01A, it keeps the stock cat

 

APS 3" High Output Turboback... looks just like stock and sounds just like stock, except WOT it sounds perfect! IMO

 

Greddy 3'' SP2 Catback - Great deep sound without the ricer noise!

 

I've also got the highflow cat and a 3'' dp. Not loud at all. Just barely louder than stock.

 

Most turbo-back exhausts will have the option to run a cat of some sort. I have a 3" Buschur turbo-back with high-flow cat and Magnaflow muffler option. I've had no warranty trouble at all. It's very quiet (not much louder than stock). A nice, low rumble...no highs at all (not raspy).

Emre

 

All TURBOBACK exhausts will VOID your warranty. You can't change any part of the emissions system and keep your warranty, this means the factory cat has to stay intact. Catbacks won't void your warranty. There are a few catbacks that are very quiet ... eg:
Fujitsubo RM01A
B & B
and another brand I forget RS-R, RNR or RMR???

 

um..yeah. What warranty!??! you are talking about a DSM.

just pull the cat, have fun- you only live once

 

unsure for turbo cars, but usually there are 2 types of exhausts: chambered and straight thru. chambered is like your stock muffler, very quiet, straight thru contains one or more resonators. chambered can contain a resonator also.

chambered is much more quiet.

i used to run a header back exhaust, no cat, no muffler, just 1 4"x26" resonator on my old car, wasn't very loud at all.

 

Dude, did you do a search! like a million threads on exhausts