I just got my car rebuilt and fired up. It will stall once I slow down or come to a stop and shut off. Car has Turbo Kit on it just not with the Throttle Body charge pipe on it for break in. I do have aftermarket Vacuum Manifold spliced into brake booster however its hooked up right and zip tied. Just have one nipple going to boost gauge at the moment. ECU is stock jdm p13. Car is obd1... OBD1 H22 injectors.

Car was NA and drove fine no idling or stalling... ideas?

 

and you're sure all sensors are hooked up, grounds are good and whatnot?

 

Yup... only does it when I brake and slow down... however vacuum leak would be at idle as well id imagine... wouldn't think my vacuum manifold T from the brake booster would be screwin anything up...

idles fine... when foot goes on brake and slows down... the recoil will stall and shut off...

 

stock ecm? tuned?

 

stock ecu p13 has charge pipe off on TB side and filter placed on...