I'm after some advice please. I have a mk5 golf gti BWA engine. I recently fitted a p flo induction kit on a standard ecu, but now it seems to feel slower from low revs than with standard airbox, almost like its more laggy. It also makes a high pitched whistle high up the revs. I am wanting to go stage 2 eventually, would I still have the loss of torque & the annoying whistle after the map? Or am I better off with a decent panel filter if I want a better fast road car, instead of having all the power at higher rpms

Ok, don't make your first 2 postings new threads, 15 minutes apart, and both just titled "advice".

^ get a life