Hey all! I just went from a MBC back to stock boost control. Now my car won't make any more boost than WG spring pressure. I have the Cobb AP running the stage 2 map. Any Ideas?

Also, if any anyone has pictures of the stock BC setup I could use those just to make sure I reconnected it correctly.

Thanks,
Jesse

 

any tears in vacuum lines?

 

nope there all brand new!

 

There is a diagram under the hood, check that you did hook it back up correct. If it is, try resetting the ECU by disconnecting the battery.

Edit: A diagram of how the vacuum lines are ran to the BC. Just thought I would clarify.

 

+1. ^^

Let us know what you find..

 

I don’t have an Evo X, but from previous experiences in my Evo 8, it seems like you hooked your lines wrong after you took the BC out. T-ed pill side house goes to the compressor outlet nipple, and other one goes to WG, and that house goes to the stock BC solenoid (In), the Out, should go back to the intake after the MAF. That is the EVO 8-9 setup, not sure how much different is the X.

 

Do you have the restrictors in the right spot?

 

^ and we have a winner. I just went out last night and used the original line between the turbo outlet and the T-fitting which contains a pill. Now it boosts like a charm. Thanks for all the input fellas.

Jesse