GT 3000 VR-4 tuning?

[MustGoFaster]

550's is going to be pushing your luck. Maybe, maybe not. If you can get the power level up to a good point you can get away with them. But normaly the cars don't have enough intercooler to keep charge temps down at higher boost on bigger turbo's.

My car with the crappy turbo's (maybe it was mostly the turbo's fault?
) and stock ic's was hitting 165 F charge temps at 18 PSI on a 40-45 degree day. Craptastic.