Quote Originally Posted by mooshie View Post
Yep get a boost controiler.
I have same setup, GT28RS on a jap B18C running Autronic SM4 with optional boost control solenoid.
I get my full 8psi at 2700rpm, not kidding!
Yeah I hit 8PSI under 4000rpm's so its not so surprising with a good quality bearing turbo...

Also mine spooled up a bit quicker when I got a bigger exhaust...

What size are you running VTi_bOi and mooshie?