Ive been banging my head against the wall on this one, at first i was under the impression it was the settings in the ems (PFC) but I'm now leaning towards a electrical problem. Wondering if anyone has run into this problem. The car starts and wont idle without constant pedaling of the throttle, my afr's on the wideband are incredibly lean and lots of backfiring out the pipes. If I am able to bring the revs past 3800-4000 and the secondaries kick in, it seems much smoother and afr's come back to stoich. However below these rpm's in my logs the primary injectors are being shut off completely and turned back on hence the up and down rpm's. After a few minutes of running i can barley keep it running and it eventually dies as if it runs out of fuel.. (f/p is set at 2.8bar and is not dropping when the car dies out) If anyone has any input i would greatly appreciate it!

 

bump, anyone?