A quick clarification: the turbos we sell are not the same as the ones other sell. All our Super turbos use the 10CM2 turbine housing, which we chose over the more restrictive 7 and 8CM2 models others sell. We chose 10CM2 based on the shortcomings we discovered with boost creep and excessive exhaust back pressure with the 7 and 8cm2 series. It flat works, and for any loss of low end (which most cars can't use w/o spinning tires more, the Super more than pays back in big end HP and lowered backpressure for more HP per PSI of boost.