brought my 05 GTI down to AWE Tuning. Put turbo back 2.5 in. Samico inlet pipe & tube set GIAC x+ chip & had the K&N in the stock intake box. this thing ran tops. then I added the AEM colr air induction intake. I got the cool sound & a blowoff valve but lost alot of sheer step on it monster power. so , What to do now? Back to the box or what ?