hi i am new at this site, i am planning on dropping a homemade turbo kit on my d16y8, whats better t25 or t4? i am planning on boosting at 6-7 psi possibly 8. please let me know thank you Peter

 

A T4 is way to big for your project, unless u plan on making 300+ one day it's a big turbo, that makes alot of power, depending on the trim u get. If your looking for under 8 PSI, The 25 is kinda on the small size, but still good if your not looking for monster hp numbers

Go with a T3 or a 15G both good up to 250ish hp, witch at 8 psi u will make a bit under 200 with a T3


A Ball bearing t25 isn't bad