MazdaSpeedTurbo
09-05-2005, 10:28 PM
I have the Hi boost fmic. before i installed it i was running 7-8 lbs boost steady and now that i have installed the fmic the boost is about 6psi and it fluctuates(or however you spell it) WOT it will bounce up and down between 5-8 psi.. also im running the dual valve setup with a greddy types bov and turboxs bpv.. what could this be also can you all post pics of the vacuum lines you tapped into to make this work right i might be tapped into wrong one or something i dont know.. i use the one that the stock bpv was tapped into. i am lost on this i thought the hiboost fmic was to add 1 psi not lose me 2 psi