This page is about Hi-Z injector tuning, at a BMW M30B34 turbo engine.
These are new 48lbs Hi-Z (12 Ohm) Accel injectors
I simply can't get the car normally idle. It wobbles between 500-1500 rpm rapidly or stumbling around at 800 rpm -no matter how much air is allowed (via MDI commands). It changes between these behaviors without any change in config.
All the time I see high (1.3++) lambda values and feel heavy smoke (lot of unburned fuel). Fuel is still burning in the exhaust slightly (definitely missfires).
I'm not suspecting mechanical problems because this car war running (almost) perfectly before we pulled the old injectors and Genboard (with problematic map values) out.
Both ECU is 1.0.38 firmware with powerflyback. I saved and reloaded the old config to the new ecu, changed MAP range according to the High-boost sensor in the new one, disabled pwm-ing for the new injectors.
Later I added the 30V transient suppression diode also (made no change at all). I've the feeling that I totally can't control these injectors. I can change req_fuel from 2 to 8ms without noticable difference in idle. Situation is similar with injector characteristics value.
Ignition advance is also interesting here, I've flatten the whole idle-and-nearly area on ign and VE tables, still my advance gets retard somehow. (Hope it's not ALS, I did my best to disable it.)
Here are a bunch of configs, tables, msq, and xls logs we had tried:
http://quasar.dynaweb.hu/~lezsi/bmw/attila/config-tables-logs.zip