Still no joy
Well, Ive tried changing the Xtals and it was just the same, I have also tried th TX on PPM modulation, taken the Jaico reg out of line, pulled the ECU out the plane, disconected all other servos ect and it still does the same thing, so if the TX gets anywhere near the ECU or the GSU (or whatever RAMs term for the info screen is) the EGT rockets up to 300+ degrees and it then starts to cool it down cos the ECU thinks the engine is hot.
ANY MORE IDEAS ANYONE???