Last night I went to tune a 2004 Dodge Neon SRT4. I read the ECU file, mildly updated fuel, idle, misc parameters and bought the credits. Once I wrote to the ECU, it fully completed the flash with no noticeable issues or power drop.
After the "successful" flash, the car would not crank, prime fuel pumps or communicate to VCM Suite to flash the car back to stock. Any idea what could have caused this?