Broken a couple of gearboxes and not standard ones too ,the diff and tail shaft has been fine ...knock on wood ..lol with te to4z which garrett made for hks and hks developt more on it ,its only a t4 turbo and a good one which produces very well horsepower at early reves ,i proberly confused you ,i mean boost comes on at 3500 reves ,which is a good set up for over all racing and also depends on how your motor is set up too ,..i know of some people it comes on about 4000 plus ..
with my motor i could have bigger turbo producing up to a thousand horspower but bloody useless for track set up when boost comes on 5500 reves plus, no good for cornering and uncontrolable ..good for drag set up ,only if you got nos to stop turbo lag and a good ems to run it ..plus the fuel bill is not too bad unless you put yah foot down and it s on 25 p at all times due thats how motech is set up or tuned ,and motech dont have electronic boost controller it has everything else but that ,..i dont know why ,its ment to be the best ,but its worked real well 4 me and keeps the car running very well ,if you can find a good tuner that is .who knows motech ,as not many do .