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Robo C20Let

posted on 17th Aug 10 at 14:08

quote:
Originally posted by P1CK4D
On mine all I had was a backbox. As said, you don't need back pressure on a turbo'd car. Mine sounded the bollocks on full chat. I miss it :(


i know what you mean mine sounded like a jet taking off until i had to put silencers on it for track days well gutted.


P1CK4D

posted on 17th Aug 10 at 07:16

On mine all I had was a backbox. As said, you don't need back pressure on a turbo'd car. Mine sounded the bollocks on full chat. I miss it :(


Robo C20Let

posted on 17th Aug 10 at 06:01

you dont need back pressure with a turbo, 3 inch straight through will be very loud but free up the exhaust nicely

no point having a cat just have a box in the middle to make it a little less loud


dale87

posted on 16th Aug 10 at 21:01

Id like to know this too . I was thinking 3 inch straight through with 1 back box also but keep thinking it wil be too loud like that but I want it to work as good as possible in terms of performance. deffo not having a cat I know that :lol:


c20letandy1988

posted on 16th Aug 10 at 19:13

hi guys i was just thinking what is the best things to include in a system for a c20let corsa exhaust system e.g. cat? centre box? backbox? iwas going to just run 3inch straight through with just a back box but not sure if i will need a centre box for back pressure etc?