Hi guys, my car is goin on the rollers on the 4th or april and obviously i want to get the best results i can. Ive got quite a few mods on my car and the filter im running is one of them viper pipercross enclosed carbon filters that connects straight to the intake that sits behind the grill. The intake i have tho is still the standard z20let one, The small one. Ive been looking and courtnay do a high flow larger one. Im guessing this is just a vectra one? Do you guys think i would see better results fitting one before it goes on the rr? Obviously im not expecting it to add loads but just wounderd if its a mod worth doing. Cheers, ellis.