Well I flashed the PCM again and that sorted the mileage issue. Tried following through the PATS module initialization procedure but I just got the message "Diagnostics" on the dash after entering incode and the IDS screen went back to the main PATS menu. I believe I should be presented with a screen to select what it is I wish to initialize with the PATS (PCM, fuel pump etc).

In the process I tried erasing all keys and relearning them which went fine. The PATS light now stays solid for about a minute when I switch the ignition on and then flashes code 3-2 which for tech say is an issue with synchronization to the fuel pump. Also, when I try to crank I get fault code P1621 Wrong code word received.

I'm reloading the IDS software with older version 80 in the hope the option was bug free then or that my main install may be corrupt.

I'm sure I just need to initialize the PCM to the PATS to crack this.

Matt