bad mbc???

[kenuwine4g63]

I think my mbc is bad. I try to set it, but it gives me different boost pressure in each gear. Im trying to set to 14-15psi. I'll end up with 9 in 1st, 17-19 in 2nd, 11 in 3rd and so on...need help should i chuck it Ohh yea the bottom nipple goes to the actuator and the side nipple goes to the intake manifold.

 

[blade970]

Yeah, sounds like a bad MBC

 

[cds1320]

It does sound like it or just a loose connection on it make sure they are tight, also if you have a relief valve MBC i would stay away from another one, the ball and spring are much better.

 

[EagleTSIawd]

if you turn it all the way down do you still get different readings?

 

[97gst_spyder]

That is the same exact thing my hallman was doing. I replaced all the vacuum hoses and everything is fine now, except I only get 5-10lb in first still...

 

[kenuwine4g63]

If i turn it all the way down ill get fuel cut too much boost. what ended up happening i blew the headgasket too much pressure not enough fuel at 18psi. so i threw it in the woods..now the engine is apart, i decided to port and polish the head

 

[Jets303]

Wow that sucks, all because of a shity boost controller.

 

[kenuwine4g63]

Yep it sucks.. I hate when its down but love it when its up