hi guys,there are several threads that explain how it works a bdm etc..

however I had a a doubt

best thing to do to feed the ecu?

should have a charger that is 12v you can use both to power the unit to keep charging the battery when mappo,or maybe it would be worthwhile to take a booster and do all of the cos? even if it goes away in the current, you can always go ahead without blocking,or even something adjustable so? you can map the bmw that apparently need a nice voltage(14 volts)?

you what have you done?