i put a air intake in my car and my idle was low and would sometimes stall out . so i figed hey i should try to adjust my bac so i did then restarted the car and it wont hold and idle and i dont know how to get it back to how it was . can anyone help . this is a 87 turbo 2 . then i thought maybe its my lean rich screw so i messed wit that it drives fine still just wont hold and idle. i should`t have even messed wit any of this stuff now im stuck .

 

Have a friend start the car while you are under the hood and then you can keep it running by pulling the throttle cable.

Do a search with BAC and you'll find hundreds of threads about this topic. There's procedure you can follow to get your car to idle and run right with the BAC. I rendered mine useless and blocked it off. My car runs and idles perfectly, finally.

 

when you put the intake on. did you losen or move the TID around? make sure you are still sealed up between the AFM and turbo

 

u rendered your bac useless and blocked it off ? so then u dotn need it ? please post a link on the how to theres like 100s of pg`s i have been lookin around for bac stuff thanks alot . for your guys help .

 

keep it you want it

 

i am gona keep it . my one friend who works on na turbo rx7s is gona try and help me out . i just hate the fact that i cant do it my self. do u know any good books to read? i just got a haynes and im gona read it cover to cover but im sure theres better out there ?

 

The correct idle adjustment procedure is covered in the FSM.

 

The BAC is not need for the car to operate, it's duty is to bump up the idle a bit when you turn on the accessories, ie A/C, headlights, blower motor, etc. My car is not driven everyday nor in the winter, so it's not really an inconvenience for me to not have it on there. I have power steering but the A/C was removed by the PO. The idle drops 50-100 RPM when turning the wheel from lock to lock while not moving.
I bought the block off plate from K2RD and ran the coolant line from the top of the rear iron housing to the nipple of the back side of the water pump housing. It took a bit of patience to set the idle, calibrate the TPS, and adjust the idle mix screw but it was worth it IMO.

 

can u use a bac off of a na turbo car on a turbo one ?