Hi I have a stock b16 turbo and I will be running it with a 8 psi waste gate spring. Was wondering would it be safe to run 8psi spring first or should I get a 5 psi spring first?? Cheers
8 psi is ok.
If you've got a good boost controller I'd run the 5psi spring and tune it upwards. This allows you to run a lower boost than 8psi. Saving the engine some stress if your just driving around.
As said, a T88 turbo on 8psi would cause a damn sight more stress than a T3 I'd be making sure I got it mapped by the right man and just making sure you don't go mental with power.