finally ordered turbine housing, outlet, and 3" down pipe upgrade for factory turbo and man what a difference. the turbine housine install was kinda tricky but not too bad. then re-clocking turbo, and the down pipe ended up interfering with dipstick tube but other than that not too bad. the power gain was real noticeable and turbo whistle is very noticeable. with monitoring guages i can see that i can can tweek wastegate for more boost, and can turn pump up for more fuel. i have notadjusted yet and see 8-9psi max. 900-1000egt max. i would recommend anyone with factory turbo to check ATS website for upgrade, all went fairly smooth but some instructions could have helped.