
The guy that did the rebuild suggested that the chip was a contributing factor to my problems.

The original pistons were replaced with forged pistons and the injectors were replaced with "upgraded" items from Baileys in Wollongong. Six months later, I was driving without towing and the engine blew a hole in #3 piston! $13000 later after a complete engine rebuild, the chip and its wiring have been removed and never reinstalled. I reinstalled the chip and did a Sydney to Cape York trip towing a 2.5t van without a problem. He cleaned them and the problem disappeared. I took the wiring loom to Berrima Diesel, where I bought the chip, and Andrew found some dirty contacts in one of the plugs. After removing the DP chip wiring, the problem went away. It started giving me the same problem that you described however, when I disconnected the chip but left the wiring connected, it still did the same thing (intermittently).

I have a 2010 Prado and I fitted a DP chip several years ago.
