Sorry people for the new thread but Ive been reading forever and cant find what looks like a proper install for my MBC on my B5. I have a chipped AEB 1.8 and want to either bypass the n75 or use in line. But, everything I see shows or talks about a boost hose from the turbo housing. I do not see any other hoses on the turbo except the one hooked up to the wastegate actuator which I believe hooks into the bleed side of the MBC . Can you tell me if I'm just being stupid or which line can I tap into for the boost side if I dont have the other nipple on the turbo housing?

 

if you are chipped keep the n75 the tune was made to work with the n75, i had a mbc on my car inline with the n75 and i was able to push 22lbs out of it. i might still have a pic laying around of how i installed mine. i drew it up when i sold my mbc the buyer wanted to know how i installed it. its pretty easy you just cut the line that goes to your wastegate and put the mbc inbetween the n75 and wastegate.

heres a pic i drew up quick of how i had it hooked up.

 

Excellent, thanks alot

 

The boost hose they are talking about is right on the compressor housing of the turbo, it should be a banjo bolt. Easy way to find it is to just follow the hose on the N75 valve that does not go to the wg actuator.

BTW just a nice warning, MBC's dont work all that great on the K03/K04 because the turbo spools up so quick and this causes surging at part throttle while trying to go up a slight hill. MBC's are designed to make the turbo on or off while the N75 can actually control how much boost the turbo is making since it has a boost map in the ecu.