Boost spiking to 30 psi is my MBC hooked up wrong?

[krummel21]

I just installed my 6-bolt and I have never had a problem with the MBC till now can someone verify through the pictures I have it hooked up right. Is it hooked up to the intake manifold correctly?

 

[matthewdesigns]

I just installed my 6-bolt and I have never had a problem with the MBC till now can someone verify through the pictures I have it hooked up right. Is it hooked up to the intake manifold correctly?

Kinda hard to tell with the trees-not-forest pictures there. But, if in the second photo the adjuster screw is under your thumb, the hose on the right is going to the vac line tee, and the hose on the top is going to the wastegate you are hooked up so it should function properly. Best way to tell is to swap lines on the mbc.

You really ought to find a boost-only source for the wastegate line, rather than teeing it off the bov, though.

 

[->PrOjEcTGS<-]

It's hard to tell in your pictures but I think you have it backwards. The line coming into the bottom of the MBC should come from the intake or a Boost source and the one coming out the side should go to the Wastegate. Looks in the picture to be backwards though.

 

[krummel21]

Here are the pictures with where the lines are leading to, is the MBC hooked up backwards? Where do you have you W.G. hose hooked to?

 

[JusMX141]

You installed a 6-bolt but you can't figure out a MBC issue?

Kidding. You have it backwards, a common mistake. Reverse the lines on the MBC and you'll be good to go.

Also, don't tee into the BOV line as a boost source for your Wastegate.

 

[matthewdesigns]

That's backwards for sure.

 

[krummel21]

Thanks guys, happy it's a simple fix. Did you guys just run the BOV to the Intake and then have the waistegate line take it's source from an upper intercooler pipe?

 

[JusMX141]

Source the wastegate to it's own nipple either on the compressor cover of the turbo or the lower intercooler piping for the quickest wastegate response.

 

[->PrOjEcTGS<-]

I drilled and tapped my J-pipe to put a 1/8npt barbed fitting in there for my MBC source. Used a little jbweld on the threads to seal it up nice.