lee101315

I am having trouble with a tial wastegate, ive had it out of the car for 2 years now, and I decided to reinstall it for a turbo upgrade I recently finished. It has an 11 psi spring inside.

I have the top fitting going to the intercooler hose, and the bottom going to a MBC. No matter how low I adjust the MBC, I cant get it to run 16-18psi, its as if the wastegate doesnt open. Is there anything else I can check? Should I try removing the top line to the wastegate to see what happens?

Scott H

Your hoses are on backwards, swap them and it will work. On a tial the MBC goes to the top port.

http://www.tialmedia.com/documents/w..._wginstall.pdf

racerxrick

I had the same prob yesterday with my LR DP wastegate. Followed the lines from the MBC and the "T"...all were OK. Climbed from beneath the car and was scratching my head? Looked over at the air inlet (LR 3" JBoot) and sqaw a vacuum line off. Secured it and my boost adjustment came back...AND some performance. The vacuum line wasn't a tight fit so i don't thin the wastegate was getting a good signal!

Hope it's something simple!

User 52121

Scott is correct. You want straight manifold pressure going to the side/bottom port. The top port is where you add in a few psi of boost to increase over the base 11psi that the spring will give you.

So swap them around and at first I'd start with the MBC fully closed, make sure you only see 11psi, then go from there.

lee101315

Ok guys, thank you for the clarification, ill switch the hoses. So I must close the MBC fully to get minimum boost, and gradually open it to raise the pressure?

User 52121

Once it's connected properly, yes.

lee101315

Thanks guys, that solved the problem. Thats probably why the more i loosened the mbc the higer the boost went. It's running 15 psi on the lowest setting, ands just fine with me. I owe you guys some beer if you're ever in the area