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Hi! Im having a problems with a ecu i chipped yesterday, kit from xenocron (C51/C52 non needed) , ecu is a P28, it Works good but after some minutes i get solid cell. i dont know where is the problema exactly. any input? thanks!

today it Works good again, didnt touch nothing, it was connected yesterday, today tried to start car and Works good..

how different is the weather conditions from yesterday?
did you move the ECU around?

likely a bad solder connection.

i Will check again. thanks!