The lines are backwards. You gots to recheck.

 

Just rechecked again to make sure and I wish you were right but that's not the case.

 

Check the rubber caps on the stock BCS. One of mine had a crack in it, causing boost creep. Just an idea.

 

^ His BCS is not hooked-up.

If you checked and it's hooked right, maybe you re-used OEM vacuum lines and the line that goes to the turbo now has a pill in it? Switch'em up (take the hose that goes to the turbo and low mbc port and use it for for wga and top MBC port) , better yet, use fresh lines.

 

Well, here's what ive found out. I disassembled the hallman boost controller and took the spring and ball out leaving it hollow which should just make it wastegate pressure correct? If that's the case my wastegate by itself is making about 1.8bar in 3rd gear. I just can't understand why my wastegate would be the problem when the car only has 9k miles on it unless something happened to it at the shop during the clutch install. *sigh*

 

hallman has a tiny hole on one of the nipple that can get clogged w/ dirt. check that out too.

 

Something is funky! To get a true WG base pressure reading you'll need to run a length of vacuum hose directly from your compressor housing discharge nipple to the wastegate actuator. Also, adjust the length of the wastegate actuator rod so that the hole in the turnbuckle on the end of the rod freely slips on and off of the flapper valve's pivot arm.

Once you've established base WG pressure, which should be approximately 11-12 PSI, then readjust(shorten) the length of the actuator rod by about 2 1/2-3 1/2 turns.

Lubricate the ball in your Hallman and clean the tiny bleed hole in the body of the MBC. Use new 4mm vacuum hose. You'll need two lengths. One length goes from the bottom(reference) port on your MBC directly to the nipple on the compressor housing discharge tube(alternately, you can "T" into the DV/intake manifold line). The second length of hose should be routed directly from the WGA to the sideport on your MBC. Secure all hose fittings tightly with zipties.

 

I guess i'm just gonna repeat myself: ARE U SURE THERE ARE NO PILLS IN THE HOSES? I don't think stock WGA is adjustble much.

 

Unless the vacuume hose I purchased came with secret pills there are no pills in the hoses.

I did however find a small tear in the vacuume line that goes to the inlet of the boost controller. Could that tear in the input hose cause this boost spike? Figured id get an answer on this before I get under the car and try to replace the hose.

BTW I confirmed the wastegate is not the problem. I ran just wastegate pressure with a single hose and it went to just under 1 bar and slightly increased to about 15-16psi by redline.

 

+1

 

Well its all fixed. That very slight tear in the vacuume line going to the input port of the boost controller was causing this whole issue. Thanks for all the suggestions guys

Cliffnotes incase someone has the same problem and comes across this thread:
1. boost shooting up to the moon for no apparent reason.
2. Ran a line from the J-pipe nipple to the wastegate directly and confirmed wastegate pressure was normal
3. Inspected both the input and output vacuume lines going to and from the boost controller and found a small tear in the input line just off the J-pipe nipple
4. Cut off bad vacuume line end and replaced it.
5. Reinstalled boost controller at lowest setting and saw wastegate pressure.
6. Readjusted the boost controller back to original boost setting.