Russ_123 Just wondering what kind of mods are available to increase torque on my vectra c? (I have a 2.2 sri 03). The only mod at present is a K&N Induction Kit. Not really bothered about top end just torque...
JohnnyN A 2.5" diameter downpipe, 200cpi Sport cat and 2.5" catback exhaust system will see you raise your torque levels. Can't remember if you've got a precat on your car but if you have then get rid of that too. Also there is the Piper 4-1 stainless manifold.