Hi I removed my nixtaugende KN 57i performance air filter and planted my original air filter box again. so sound-wise eats now again normal as before (from the beginning) … and pull it does well but irgwndhow did I find that the “kick” at 6000 is almost no longer there and the sound also changes as well as not… can that be that the control unit has to adapt itself first or can it be? that with the sound can be already normal, because I still have an exhaust under under which could sound the vtec sound and now overtone, but as said the kick is almost not available… someone has a rat? so the kick was last still there, on the oil can not lie where the oil on the measuring bar is only 2 mm above the minimum limit… (must soon be for customer service)