I HAVE A 94 WRX, I FITTED A DUMP VALVE, BUT ITS TOTALLY UPSET THE IDLE SPEED OF THE CAR, IT ALMOST CUTS OUT, RANGING FROM 1500RPM TO 500 RPM ON IDLE, ANYONE ANY IDEAS??

 

yep put he re-circ one back on

 

i had similar problem, i was told the spring in the dv was too soft for the car. i have a 93 wrx btw. i put a lemans dump valve in n had no problems with the idle after that. correct me if im wrong any1

fuzzy