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GFB MBC boost problem v7 sti


WantbOOOOst

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Hey all so i recently installed a gfb mbc to try control the spiking i was getting to 21psi with the factory solenoid. I\'m 100% sure that i\'ve installed it correctly but now it doesn\'t seem to want to run more than 15psi and this is with the screw all the way out (16psi on cold nights) I\'m trying to set it to 18-19psi but the bloody thing wont go any higher. I\'ve taken it off and blown through the holes blocking each side at a time and it seems to be fine.

Pretty sure it\'s not the controller itself as i tried one of those cheapo taps but that things even worse as it free boosts up to 30psi with the dial screwed all the way in or out.

Anyone have any ideas? I need to get this sorted before i go for a tune.

Cheers

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