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Buschur MBC confusion!?

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sweet97

15+ Year Contributor
2,386
18
Mar 6, 2004
auburn, New York
I believe I may have my lines reversed. I have the boost signal going to the top nipple and the line from the bottom nipple going to the wastegate actuator. I use a nipple on the turbo compressor housing outlet for the boost signal.
I get 13 PSI. Nothing more with MBC adjustment. The actuator must have a 13lb. spring.
My car is not yet street legal so I cannot spend much time on testing. I have taken it around the block. Working out the bugs from winter additions. Thanks, Mark
 
If it's a ball and spring type, the pressure source should be inline with the adjustment knob and the T fitting whould go to the actuator. Try bypassing the mbc and see if you get the same 13psi, make sure you don't have any boost leak.
 
I got a reply from the Buschur site and I got the lines reversed. A couple other of issues and weather will keep me from testing for a few days.Thanks
 
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