how much psi does the stock WG holds? also how minimun of psi can I run with this WG?

 

stock spring is 12 psi

 

yea I know...but I want to know If I run W/O boost controller how much PSI should I see?and how lower can I go on boost with the Boost controller

 

lowest ull go is 12psi.... A boost controller helps your raise boost over wastegate pressure. If you want less then 12psi get a smaller spring for your wastegate, but then you will probably hold less at redline once you raise the boost back up