i was wondering whats the stock boost for the 3000gt vr4. i have a na gt and i want to do a turbo up grade. but before i do anything i want to know the stock boost of the vr4 turbos. i want to turbo up grade my gt with the stock motor with minimal engine replacement parts. i may up grade cam shafts, but i will be needing bigger injectors(maybe stock vr4), fuel pump(walbro if they have them), an ecu reflash, and some other minor up grades. i want to use the stock vr4 twine turbo as base for my up grade. let me now what else i'm missing and how much i'll be spending on it. need help. thanks.

 

Why did you post this twice?

 

mass up on one of them. sorry. still need help.

 

if your going to do a TT Converion on a 10:1 block, check out the NA to forced induction section on the forums @ 3si.org. I believe the Stock 9b's from the factory push 6-8lbs.

 

well on my stock twn turbo GTO in any gear as soon as u put your foot down it go's up to 10psi then drops very fast down to 6psi and stays there 4 the rest of the revs i think it holds 10psi till it gets to about 4,500rpm it drops very fast to 6 psi and stays there i have asked y it dose this and i have been told the back of the turbos are to small to hold the boost up hope this helps