hi, i'm looking to buy tial 38mm on extremepsi website and they have this option to choose for "spring Bar/PSI", not sure what this is, if some1 kow pls let me know asap, thank you.
http://www.extremepsi.com/store/customer/product.php?productid=16320&cat=1142&page=1

PSI = BOOST.

Pick which spring you want with your wastegate. If you have a stock motor, get the 8psi spring. If your built and wanna run safely, get the 15psi spring or if you wanna run with the big dawgs, get the 20+ psi spring!

-MIKE-

Stroked 2.2L

thank you mike

Get the 8psi spring. I doubt your gonna want to run 20psi or even 15 all the time. It's better to ahve the smaller spring and let your boost controller do it's job then be mad cause you can't run less boost when you don't need it.

Fully Built MS powered 99' GS Sport, Garrett T3/T04e 60 trim with one big ass intercooler!

Yeah, she runs...sorta!

that was close, yeah that's good idea, i don't plan on running 15psi everyday, called extremepsi just in time to change it

I have both the 6 psi and 4 psi springs from Tial. Right now my pump is pretty worn so its nice to only be boosting the 4 psi so I don't risk running lean if I floor it.

Mike D
-------------------------------------------------------------------------------------------------