I was wondering how reliable a turboed h22? I would think its not very. 5psi on that motor. I would think about maybe 300 at fly. With good tuning and every thing so still my car will out perform it until the end my 8 valve head will flow about 350 hp before need bigger valves. If i spent the money and time on 16 valve conversion shiti dont even wnat to talk about the number possible...