Simple question
 

WHat is the standard pressure(psi) for the stock turbo with the supra. thnx

On my 87 it is 8psi.

if you give us there year it will help us help answer your question

it's an 89

i thought it was a 6,8 lb spring used, but from what i hear, some one in dever might hit 4lbs, but drive to sealevel somewhere and it might hit 8lbs put on a 3" downpie turbo back exh. system w/ some intake mods you might hit 11psi.??.