'90 Coupe/Redtop SR/Power FC..Starts, Dies.
 

http://www.youtube.com/v/pKFKHn9MPY4

Little bit about the car.

'90 Coupe
Redtop SR20
300ZX MAF
Tomei 555cc's
A'PEXi PowerFC L-Jetro for Redtop
S15 Turbo

As you can see from the video, the car starts right up, runs for about 1 second, then shuts off.

The Story:

About a month ago I got a new Braille 11 lb battery. I was hooking it up in a hurry and hooked it up backwards.

Things that I have found broken.

- Power FC (several diodes, resistors, a chip fried)
- 75A Fuse
- Ground to coilpacks was questionable.

Things that I have replaced

- PowerFC (brand new unit)
- Ignitor Chip
- 75A Fuse
- coilpack Ground

I have the injectors scaled, as well as the latency set for the injectors. Other than that it is the base Redtop map. On my S14, when I installed the powerFC the car started RIGHT up.

When I test the coilpack harness, I see that I have power to the coilpacks, but no signal and no ground. I have checked all the other fuses, I don't find any that are blown.

When I unplug the MAF, I get no change in how it acts. Same with the TPS. I am getting fuel, I hear the fuelpump prime and the car shoots fuel out the exhaust.

I am at a loss for whats wrong. I've been toying with this thing for a month and can't find anything wrong.

I'm still baffled by this man... running out of ideas. So weird!

Tested the TPS. It's fine. Still have no idea what the problem is.