Boost creep problem

ddyke06

New Member
Nov 6, 2010
1
0
0
Maine
So i've got an 87 supra...7mgte...some minor mods including a BIC divorced downpipe. I love the downpipe and it sounds good. the problem that i have is that my boost pressure is not stable. it will slowly creep up and keep building at high rpm's until i either shift into the next gear or let off...or i hit fuel cut. so obviously my wastegate is not letting the exhaust flow enough so the pressure just keeps building. my question to everyone is what's the easiest way to solve this problem without spending tooooo much money? im 23, tool bills, school loans, rent, not much money left over after my microwave dinners haha. weld the wastegate shut w/new manifold and external wastegate? any ideas?
 

hvyman

Dang Dude! No Way Man.
Staff member
Apr 17, 2007
12,568
1
38
Fullerton,CA
What turbo are you using at what psi. Stock or upgraded ct?

Could take the turbo off and port the waste gate hole. Just make sure nothing gets in where the wheel is. And dont go to big where the flapper door wont seal.

Using a t4 mani would be some work and some money. Not really worth it with a ct.