I ordered a Bosch noid light so it should be here shortly. I agree that the screwdriver test doesn't say much. I'm almost convinced that it's either the #3 injector itself or the DME isn't getting a proper signal to that cylinder. The noid should tell me a lot more as soon as it gets here.
As far as vacuum leaks goes, I haven't rigged up an air fitting yet, but you guys are sharp with that pvc/compressor idea. Nice! that will be next if the suspected injector fault doesn't fix everything. Also, I REALLY dread having to remove the TPS and/or intake. On the S those are a real pita.
Updates soon
