Hi Cam,
A fella in WA I know has been trying for along time to do this....thought he would get away with fitting a T and relocating the pressure senders on the T so they read equal pressures and did something else tricky with the temp probes....thought he had it nailed but the ECU must do a burn cycle at a pre determined time interval even if the pressure differential is indicating negligible particulate accumulation......in the end he gave up.
I believe the new MY13 models have improved cbus access so we have one coming soon and we'll be doing plenty of r and d to see what will be possible.
I have heard that some of the fire trucks have them deleted by the factory but maybe just one of those urban myths like DPDs on fire trucks starting bush fires when they do automatic burn cycles.
I only know of one guy who fitted a 450 computer and DPD to his 300 ...so got 185 hp .....he said it went great but maybe he should have gone for the 550 computer and DPD.......when I talk to the Isuzu tech heads, they reckon a 205 hp upgrade through the 300 drivetrain would be nuts.........that's "nuts" in a bad way.
Hey...welcome to the forum....good to have some Kiwis on board.