This is my second Aeroforce now that when I plug it in it says "negotiating with ECM" then it turns off, restarts and says it again and keeps repeating that.... And I also bought one for a buddy and his gets as far as displaying the two things on its display (ex. coolant temp, mph, trans temp, etc.) and it wont show any readings on it and then it turns off a few seconds later and just flashes the red lights.... anyone know why they're doing this? or maybe i'm doing something wrong..