i have a astra mk4 1800 sri i have fitted a full through remus exhaust and want to fit a sports manifold with dcat does any one no how much this will improve my performance
I wouldn't bother with a decat it only seems to release around 4-6bhp on most engines. A full sports exhaust would work well with an induction kit but probably not give much on its own. Have you looked at fast road cams? That can make a blinding difference on the Sri's!
cheers for that iv got an induction kit already do you no were i could get decent cams for a decent price also someone hit my front drivers wing and im wondering if any one knows where i can get one for cheap