Hey there,
I fitted my decat pipe today and thought the exhaust sounded wrong so i called my mate who said my exhaust was blowing and he asked me to reach under where i fitted the decat pipe to see if i could feel any air coming out so i did and i could feel air coming out!
So im just wondering if gasket paste will fix this? or if anyone knows of a way to fix that wouldn't cost much money
many thanks.

did you use a new gasket on the front end?

No i didnt get one with it and there werent one on the old cat either :S i noticed when i took the old gasket off there was alot of white stuff :S as is some one has pasted the old cat already maybe ?

gasket is only a couple of quid, go get one,