Probs be more noticable as the 5e will need more air anyway.. Right, instead of making a new topic I thought I'd just use this one, should have a rolla manifold FAQ section I recently replaced my old manifold with one of these, I have noticed it gets through the revs better but when i get up to 5-5.5k (i'm asuming as i dont have rev guage, lets just say 50 in second ) I get these blips in the rev range, are these flat spots? if so any way of getting rid of them? I have an induction kit (cheap one ) and I've tried putting back my old airbox but still get them. Would i have to reset the ECU? Or get a decat? because the more air in the more air needs to come out... Rich. If you need it explained better I'll try my best lol