exhaust cat back power.

[ozaudio]

Has anybody any were ever changed the catback part of the exhaust and gained anything? , I have a catback with sports cell cat which was built at BCS exhaust , this alone is what has give me power so far. The other day I was round there and dave said its a 3 week waiting list at the minute to book me in if I wish, the car has an after market exhaust but its the same size as a standard exhaust so nothing gained there apart from a tiny back box which is loud as hell, the price for the catback exhaust is a VERY good price but still a lot of money if no power is gained what so ever , even a little more torque will help justify me buying this if I do go for it, ill try and fit FMIC at the same time and get proper use from the stage 2 map I have

 

[nd-photo.nl]

Most important part of the exhaust is the downpipe. Catback is important, but not as essential as the downpipe

 

[ozaudio]

I know the cat back is the important part, that's why I had it done. What im wanting to know is can the exhaust gain anything extra after changing the DP , proof from a RR instead of random guesses would be better

 

[nd-photo.nl]

You will gain something, gases can escape faster with bigger bore exhaust (dont go too big though). But when using same diameter as stock, no.

Recommended Catback LC180: 2.5"
Recommended Catback LCR: 3"

 

[wildrides]

About 5 hp if your lucky ........ thats all ............ you wont be able to detect it driving . It will just feel quicker because of the extra noise