Originally Posted by
Glenn.
It will defo make your car faster.It did with mine before it got mapped.Make sure your fueling is ok too.
I have RS500 IC waiting to get installed to my stage 2 Cossie (greens, T3 1.3 bar). I heard its noticeable power upgrade, but it should also make a difference to my AFR? I don't have lambda so I should probably book time to mapping specialist to check the AFR after the installation of IC just in case. How radically did it change your air-to-fuel mixture if you didn't have lambda?