Odd MBC issues

[OMEGA_RAZER]

Okay, I apologize that this has probably been answered but I can't seem to find it if it has.

I've got a Hallman Pro RX that I have installed in where all the guides show. The problem I'm having is that I got nothing above stock until I had turned in almost 4 turns then it went right up to around 1bar. It seems to hold there sometimes but others will drop back to .5bar. Just not quite sure what's going on with it. Any help is greatly appreciated.

[Davezj]

do you know that the MBC actually works correctly?

have you moved it from a working situation on one car to the corrent situation.

or is it just something you had in the garage you thought you would fit.

[OMEGA_RAZER]

Yes, working, moved it out of a skyline to mine.

[BEG4ME]

Tried by-passing the electronic boost solenoid to see if that helps?

[OMEGA_RAZER]

That I haven't done. Any good place to look for steps on that?

[BEG4ME]

Just follow the pressure hose to the electronic solenoid and you'll find the correct hose that feeds the waste gates. Put the MBC in place of the electronic solenoid.

[OMEGA_RAZER]

Okay, Will try that out.

I have since removed the MBC and depending on the gear I'm in I now go up to .7 or .8 and then drop down by .1. Is there anything that would cause that or is mine just messing with me...

[wintertidenz]

That's completely normal, especially at high RPM. The turbos run out of puff.

[OMEGA_RAZER]

It drops off before top end though. and before I topped out at .5 and held there.