Originally Posted by jdms2000f20c

I had the exact same problem drove it parked it drove it and cel came on. Ran the code had something to do with Tdc did the map whack and it went away for a bit. Drive it some more and it came back. It was the wiring loose. I took out the black box and went back and soldered ever wire with heat shrink wrap and it solved the problem haven't had a problem since. So yeah check your wiring.

Originally Posted by jdms2000f20c

If you solder the wires exactly as to how it states below the cel should not come up and your car won't go into limp mode. When I first installed the black box and map controller I used crimp connectors and the yellow and black wire got loose. I then redid all the connections using a solder and the problem went away as soon as I finished.

I got the information below right out of the install manual you can find it on google or straight from Vortech. Hope this helps.

Tap the red wires from the timing controller and the MAP controller into the yellow/black wire (1 IGP1) on the 25P connector. (See Fig. 15-f .)
Tap the black wires from the timing controller and MAP controller into the black wire (2 PG1) on the 25P connector.
Cut the green/red wire (17 MAP) on the 31P connector and install one male and one female slide connector onto each end.
Connect the blue wire from the MAP controller to the green/red wire leading to the engine com- partment.
Connect the white wire from the MAP controller to the green/red wire leading to the vehicle’s computer.
Cut the blue wire (8 CKPP) on the 31P connector and install one male and one female slide con- nector onto each end.
Connect the blue wire from the timing controller to the blue wire leading to the engine compart- ment.
NOTE: Each of the vehicles wires that are cut should have a male and female slide connector in- stalled on each end so that the timing box or the MAP controller may be unplugged at any time and the vehicle can run in a stock configuration.

Connect the blue/red wire from the timing controller to the blue wire leading to the vehicle’s computer.
Cut the green wire (20 TDC1P) on the 31P connector and install one male and one female slide connector onto each end.
Connect the green wire from the timing controller to the green wire leading to the engine compartment.
Connect the green/red wire from the timing controller to the green wire leading to the vehicle’s computer.
Cut the yellow wire (20 TDC2P) on the 31P connector and install one male and one female slide connector onto each end.
Connect the yellow wire from the timing controller to the green wire leading to the engine compartment.
Connect the yellow/green wire from the timing controller to the yellow wire leading to the vehicle’s computer.

Originally Posted by tom153

Get under the dash and look at all of your wires. On my car I had that happen when to top left wire (yellow with a black stripe I believe) loosened up in the middle ECU connector.