tuning

[5008tony]

i have a 02 vectra c 1.8 ls what can i do tuning wise to improve perfomance? ive got stainless steal from cat back and k&n induction kit !!

[Das]

Not much else. You can get a starchip but thats only an extra 8bhp for nearly £300. After that think its a head off and get the ports looked at. Dont even think you get a performance cat for it, not sure if you can do away with it either, as its one of those silly combined manifold cats.
NoS might be the next route to look into.

[Rab]

N/A engine not very much. a filter and an exhaust will improve response but wont give great gain. pointless tuning an N/A engine unless its a light weight small hatch.

[Jezzy]

Throw out the spare wheel, jack and rear seats.

[messsy]

Cleaning the throttle body and pipes will improve things a LOT, i do mine once a month as a rule