Cat Back With No Tune?

[TY XR6T]

Hey guys. I have recently bought an 04 turbo BA ute. Am looking at putting an exhaust system on it. Not after any huge power gains. Mainly after a system that sounds good. So am I able to put a Cat back system (either 2.5inch twin or 3.5inch single) without getting the vehicle tuned. Its only when you go a high flow cat you have trouble with the engine lights coming on correct? Or can I fit a high flow cat without tuning? Was after a nice deep exhaust note so mild steel would be the best yeah? And would the single pipe drone much?

Any help is much appreciated. Cheers

[BensXR6T]

Hi

You can do anything you want to the exhaust after the cat without needing a tune. the CAT is the restriction in the system. Can't do anything to the cat without getting it tuned or it will boost spike and cut the boost and be horrible to drive.

Cheers,

Ben

[XtRmn8]

TY XR6T, where are you located? I got a Herrod S/S cat back on my ute at the moment, sounds very nice. I bought it like that so can not tell you what difference it made, if any. But I can tell you that on a cold night it hits about 9psi, which is a mild case of boost spike.

[TY XR6T]

I am located in Hervey Bay QLD. So not a great deal of options for exhaust systems. Have you got any other mods done to your engine or just the exhaust system done? Why would it cause it to spike?

[Che]

Hi TY XR6T

I am in Hervey Bay too. How did you go with your exhaust set-up?

Cheers

Matt

Edited 04/02/10 02:06 AM by tab
Quote removed