| Iv searched and searched on this and found lots of different info. Im getting ready to mod my z and looking to see what you all would think is the safest Hp # on stock motor. Some people say nothing bigger then sport 530bb and 28r turbo's on stock motor. Iv seen some members with 550-600rwhp on stock motor, which i know will not last long. It all boils down to how the condition of the motor and having all the supporting mods and the right tune. Would it make more sense to buy bigger turbo's lets say gt675rs rather then sport 500 but run it at a lower psi to get the same hp. Is that possiable im kinda thinking later on down the road maybe a built motor. I was just thinking buy bigger but put less stress on the parts but also have room for more down the road just incase rather then selling the stuff and having to rebuy. Im looking around 450-475rwhp range.
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