was just wondering how (on average) the following mods will impact on the cars performance; bhp, mpg, top speed, and 0-60
vectra c intake
new panel air filter
also would like to know how much would cost:
- a new manifold and stainless steel exhaust
- chip remap
- induction kit
also any recommendations on these would be appreciated!
what gains would i get on the 1st 3, and following 3?