So I'm installing my MBC and went back to put it together and realized there is a small nipple on the bottom of the perrin intake that was plugged into the stock boost solenoid. I've got the MBC ran from the wastegate actuator to the MBC and then to the compressor side of the turbo, so can I just plug this nipple or do I need to T it into the MBC line? If so, which line. I know this subject has been covered a million times but I've got my car torn apart right now and I have to go to work in the A.M.

 

Cap it off. All done.

 

Not to jack your thread, but have a similiar question about boost control.
So if I didn't want to use a MBC/EBC, and utilize the ECU to control the boost, I have heard you need to upgrade to a 3 Bar map sensor, and a Boost Solenoid as well.
When I search for this type of setup, i find nothing, unless I am wording it wrong...lol
When I look for parts, I find the 4 Bar map sensor, but no solenoid. I have found a solenoid from tactrix, but am not sure what I am looking at. Do I need to upgrade both, do I still need a MBC even if I upgrade those parts?

Any help is appreciated.