when i was finished my front mount set up...i let the car idle for about 10 minutes with no problems. moved it, let it idle again for about 15-20 minutes. no problems. then one last look over for about ten minutes of idle. everything was good and idle was steady at 900.

then when i drove off, i pushed it very little to about 6psi and the rpms shot up to 3500 when i let off and was boucing back and forth from 3500 to 4000. i pulled over opened the hood and the rear rotor must of been EXTREMELY lean cause that part of the manifold was glowing red.

the only thing i have different is the vacuum on the BAC (the large opening one) is just open. before that it ran to the top mount intercooler piping. can i cap it, or i have to run it back to my intercool piping. or can i just block that bitch off. or maybe this isnt even my problem........????? when i plug it it dosnt fix the idle...maybe it has to calibrate itself or something.....


oh...and i have the older greddy type-s blow off valve. theres 2 vacuum ports on it. im only using one. could be another problem???

oh...if i put it in gear, the idle drops back down. and a soon as i take it out of gear, it shoots back up again.

 

The air supply hose to the BAC (not the coolant hoses) should only be connected to the intake hose BEFORE the turbo.....NOT boost pressure. If you cap it off, the BAC cannot control idle speed. I would also check compression on the rear rotor....a glowing manifold is not a good thing to see.

 

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