Exhaust Removal

[RSK]

Yep, stock cat. My tuner said it wouldn't need a re-tune. I take the reason being the CAT is the biggest restriction in the exhaust and effects the back pressure the most?

In regards to the burble, I've heard stock cars with centre mufflers out burble, and on retune it goes away. I havn't heard about the burble in relation to tuned cars getting the muffler out burbling after though. Guess I'll find out

[BFHOON]

I forgot to mention no cat no mufflers = uncontrolable boost.

I have a modded wastegate fitted.

[cranners]

So a XR6t with no cat but rear muffler would dampen performance??

[4SinAir]

We've done a few of these as custom jobs, but with twin cannons... not too loud really.

wat do you think about just putting one canon on the end an with them standard hotdogs just before the canon RAPID?

cheers

[RSK]

In saying that, its not going to dramatically increase flow or power so a retune isnt needed.

Just spoke with my tuner, and he was a bit hesitant, and said that it MAY increase boost a bit, and change my AFR, around. So being better safe then sorry, car is going in tommorow after the exhaust to check the AFR's and a possible Re=rutune