I explain my problem: this is a completely new cross motorcycle. The engine is stalling when rapidly opening the throttle. As if it was too poor
Everything seems normal:
TPS: voltage curve OK at slow or rapid opening (or closing) .
MAP sensor: idem, value within theorical values
CKP, alternator seem OK (apart from the fact that the voltage when engine running is maximum 0.2 volts above the battery voltage). The two parts have been replaced (only available as a unique part) without any change.
Injector seem OK, the only doubt is the curve of the injector Voltage which seems strange (either the injection is cut a very short time or the ECM switches it in 2 phases) the pulverisation is OK and the fuel pressure is constant.
ECM: the customer has had the chance to have another reliable one for testing without any amelioration.
ECT: Water T° has been change by a precedent mechanic
IAT: Air T° no value available.
Curves ARE available but probably too heavy
Does someone could help me: what else should I check