Roger.m.

hi all i have a full 3inch decat revolution exhaust system which sounds awesome but i would like the odd pop and bang now and again. If i change the backbox could i achieve this. it has blown the odd flame when its hot and a pop that i can fart louder than.

clark822

vta dump valve or you can have mapped in

Roger.m.

i have a very loud vta dump valve and a full decatted system im thinking i need a different back box.