Did you test it with only turbo before ported head?....I have also mxc stage 1 but i have pinned crank and boost is about 14psi....thinking of porting but i dont know if its goodi have mcx turbo stage one with 10psi, stock crank and motoer.
just with a ported head.
what rpm do you think i should leve it at , now its set on 6500