A lesson I learnt a long time ago but ignored - the car is not broken, do not fix it. The car has been driving so nicely on the odd day I've taken it out in the last couple of months.
I ignored my own advice today and thought it might be nice to get the new O2 sensor bung welded in the dump pipe, install the new O2 sensor and fit the remap board to suit the O2 sensor. Remember it hasn't been running a working O2 sensor since the engine conversion in early 2006. I'm now left with a car that's pissing fuel into the cylinders and flooding, misfiring, doesn't want to start, the check engine light is on and if you manage to get it started you have the keep the car in gear and the revs up or it just stalls. It also fills a workshop the size of a school hall completely with fuel smoke in about 5 second.
Happy happy joy joy, happy happy joy
The tuner says the check engine light means that the board isn't seated properly inside the ECU, meaning that the ECU is working as a stock ECU and has no compensation for the 740cc injectors and Z32 AFM that are trying to communicate with it. Problem being that we took out and put back in the original board (that it ran perfectly with) and the new board multiple times and it won't run with either board in it, O2 sensor plugged in or not.
I am internally raging. I should have just left it.