I purchased an Accel DFI Gen. 6 unit about a year ago from someone that was parting out their car. I just barely got around to installing it and I have some questions. First of all I do not have the original installation instructions so I had to look up what all the individual wires are for using one of Accels online pdf files.
As far as my car goes it is a 420a powered Eclipse RS. The engine is built with JE pistons (8.8:1) and rings, eagle rods (which I now know will be my downfall), trimetal rod and main bearings. I also had the short block balanced and blueprinted and the crank turned and indexed. The head has been gasket matched and polished with Crane springs installed. I never got around to changing out the cams so they are still stock. I turbocharged it about a week ago and would like to use the Accel unit to run some 450cc injectors. Fuel pressure is controled with a BEGI multirole regulator backed by a Walbro 255 high pressure fuel pump.
Anyway my questions are these:
1) I read a post by DarkOne saying that the trigger can be taken from the only solid white wire going into the stock ECU. Is this all I have to do for the trigger? I know that the coil pack has two trigger wires on it from the ECU. Do I not need both signals?
2) For the coolant temp. sensor the DFI Gen. 6 unit is coded to use a Thermistor with a 5v signal. The stock coolant sensor in my 96 420a powered eclipse is already a thermistor with a 5v signal. So why can't I just use my stock sensor?
3) Since the Accel DFI only needs to read the signal output from the coolant temp., intake temp and tps sensors (I know I can't use the stock MAP sensor) why can't I just tap the signal wire to these sensors? Especialy since the stock ECU already supplies the 5v signal and the ground in the case of the TPS. If I don't need the 5v signal or the ground from the Accel DFI do I still have to use it?
Help with this would be appreciated. I have spent a few days trying to search for answers to these questions on the forum. All with the hope that I don't ask a redundant question.
