QUOTE(bully09 @ 31 Dec 2009, 04:04 PM)
<{POST_SNAPBACK}>i still have the standard exhaust system fitted to my ST 3 and am thinking of replacing the standard cat for a sports cat, does any of you know if this would cause any problems? also what extra performance would this give? have any of you done this already? wondered if the sports cat maybe give the standard exhaust abit more noise and abit more poping?
Could do with the 3" downpipe as well mate. You don't need the cat back if you don't want it. I'm sure PDUK (They're a sponsor on here) do a downpipe and sports cat package.
I had a Mongoose catback and added the sports cat and downpipe 6 months later. It made the exhaust louder and definately more popping and banging
I also found the turbo spools up quicker and the car definately pulls better
Hope this helps
Chris