Engine Management and Tuning Crome, NepTune, Hondata, AEM, MOTEC

What pin actually powers the ECU?

 
Old 06-12-2019, 09:46 PM
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Join Date: Dec 2018
Location: London UK
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Default What pin actually powers the ECU?

I have a P28 OBD2a Ecu, but i was just curious to what input actually powers the ecu board?

i always thought it was the VBU but mine is not connected and still powered as i have very little wires being a race car to the ecu, i can only assume the IGP ignition wires also power the ecu am i correct?
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