I am using the original Bosch motronic as the ignition source on my westfield 2.0xe, since I am using carbs I have had to make a plenum chamber to enable me to measure the airflow into the carbs using the air mass meter. Question: what would be the effect I disconnect the air mass meter, will the ignition side of the ecu revert to limp home mode
I am only using the ECU for sparks, tried the old cavalier dissy but could not stop the pinking. The engine starts and runs with the air mass meter disconnected. Can I run without the air meter or not ?????????
i presume limp home mode is some horrible concoction of under fueling and heavily retarded spark timing.
If your still using the spark side of the system, i think its still susceptible to be altered by the ecu. in the event of a prob that is.
i know one thing for sure, i took my AFM outta line when i ran the car to clean the throttle body, its sounded like a tug boat and, there was all sorts coming out the exhaust.
on the flip side ive read one guys post a while back claiming he ran his car with no airflow metre and it was fine ? mr stickland guessed that maybe in the abscence of the metre the ecu was running a stored map sort of making a best guess.
I'm just offering thoughts obviously if it works it works, maybe talk to tuning companies see what they do with carb conversions, obviously choose a place that aint gonna try and sell you a 400 quid sparking module
Thanks chaps, so to summarise.......it may well run ok without the airmeter, but this may or not be due to the fact that the ecu stores a previous map in its memory??
Surely this means that if I run without said airmeter and then disconnect the battery at some time I will lose all settings and it would possibly not run when the battery was reconnected??