My mate send this picture from his lcd (1.1.27 ps2 vems 3.3). It produced once when he made a heavy acceleration. After reset everything seems normal. Any idea?
(http://www.cosworth.hu/misc/lcd.jpg)
It's what you see when you have enabled PS2 and get some interference causing the ECU to react to false keypresses on a keyboard that isn't there. Worth noting is that most people run the "non-PS2" firmware, not only to get wheelspeed input instead, but because nobody uses the keyboard when you have a tuning laptop connected to the serial port.
I used to get all sort of junk appear like that until I used a shielded cable (an old serial cable) with a good shield drain and fitted a choke on the cable. Never had a problem after that.
check your spark plugs, spark cables and ignition coils.