Twin Wastegate pressure issue.

[95burgundyesi]

I have a twin scroll set up with 20lb springs in 2 tial wastegates that are recirculating back into the exhaust controlled by a Hallman mbc. But I am building 30+ psi with the mbc back all the way out. Mbc was cleaned and checked, wastegates are authentic and new. Wastegates lines are ran properly with 1/4 inch hose to the bottom of the wastegates port of each one, with the top ports left open.

I do not understand the excessive pressure being built. I triple checked spring colors for correct baseline pressure. Ideas?

 

[1990TSIAWDTALON]

Run dedicated lines from your boost source to the "watergates" Mr Nixon, effectively removing the MBC and see what your boost is. Its just a test understand so there is a reference point to see if you still boost to over 30 lbs. I accidently had the wrong springs in my TIAL and it was obvious when i ran staight WG pressure. You could also unhook the boost source lines completely and do a BLT to see if they crack open at 18lbs.

 

[95burgundyesi]

Once traffic reaches "resignation" I will do the test.

 

[bastarddsm]

Make sure you have all the plugs in your gates