Cheers rocar, i understand about the lag and the bigger ex housing thanks, just using it to illustrate a point. So could you have changed the ex. housing on your 60-1/T3 hi-fi for even more power but more lag, what power did you see with that set up in BHP.I like the sound of that turbo the 60-1/T3 hi-fi. All of Turbonetics turbos are external wastegates i take it, which one did you use? They look fantastic! CheeRs for your help rocar!!!