i raced a biturbo2002 s4 topping out my old subaru at over 150mph(the needle was pegged past the MPHs on my speedo and i was almost redlining 5th gear and it felt like it was meant to go that fast, it really did.
and i just beat a stock e36 M3 in my viggen at 140mph+, not sure te exact speed, but the D.T.E. gas meter dropped 90 miles in that short period of time and the car did not feel incredibly stable, i have been told, however, that this is because i am missing the front plastic piece under the front airdam, maybe this would make it more stable…
DOS…dont worry you wotn be trapping 150+with your new turbo kit… so you dont have to worry about it 