[s-cars] Rough Idle Still?

[Cody Payne]

Gents,
	Ok changed out my RS2 Injectors and RS2 MAF back to stock units and replaced my O2 sensor this weekend.  I did this due to the fact that the car was running very rich, as suspected...which destroyed my O2 sensor...causing a rough idle and CEL.
	Replacing the above did fix my "upper" sporadic idle and CEL issue however now I am getting a low idle/stalling problem.  My ISV seems to be OK and is clean but this stalling problem is curious.

Any ideas? Bad O2 Sensor (Borg-Warner Part#OS702)? As no Bosch were available at NAPA, Checker, or AutoZone? Output tests on ISV "sound" good, as I can hear the valve open and close.  Perhaps Fouled plugs due to rich mixture could cause stalling?  Bad stock injector after re-install?

Thx

cp