I'm currently boosting 8lbs on a stock h22 the only problem i'm having is that when I go past 5000 rpms the cars kind of hesitates a bit and then it feels like it want to pull but it does not. the rpms take a while to get to 7000 rpms. I tried to set my vtec to 7000rpms just in case maybe if the vtec was engaging maybe it was causing the engine to do that but it still does the same thing, also i just cheked the spark plugs and they looked king of a tan brown do you guys thing I need to richen it up alittle more?