3L r32

Been a bit busy at work but I got a chance to attack it the other night. He picked it up yesterday and I haven't heard back from him but i"m assuming it will fix his issues. Plumb back was partially blocked, I think this was the main part of the issue.

I am looking at a fairly standard rb25det skyline for a friend that has a dump pipe which looks the same as this on it with a divided plumb back. http://www.ebay.com/itm/JDM-PRO-NISSAN-SKYLINE-RB20-RB25-R32-R33-EXHAUST-TURBO-DUMP-FRONT-PIPE-RB25-/181239136372?pt=LH_DefaultDomain_15&hash=item2a32b1c074&vxp=mtr The car is having some serious boost creep issues. It is running a standard 5psi wastegate actuator with no boost controler and is creeping to over 12psi above 5000rpm Boost holds steady 5psi at lower RPM I have checked the flapper movement angle and it is a little less than 90 degrees Has anyone had any similar issues with these?