Originally Posted by
t3t4delsol
if you have a 10psi spring you should be able to make 20 psi of boost,, i made 267 hp nd 197ftq on the y8 with stock internals on 9 psi, with a turbonetics t3/t4 60 trim, I would check to see of you have a boost leak somewhere, also how is your boost controller hooked up? what rpm do you start to spool and what rpm do you hit max boost?
Agreed. That's why I think he should check the spring to be sure it's what he thinks it is.
