Which wire to make the car run!? (UniChip ECU content)

[FAST_aD13]

Long story short, my cars been having intermittent running problems (idleing rough, firing on 3 cylinders, bogging down when i accelerate then shooting off)

I suspect the Piggyback ECU that came with the car is on the fritz, so I want to run the car without it (unplugged) to see whether the problem goes away

(Picture of the Piggyback ECU)



Unfortunately simply unplugging it doesn't work as the car won't start, so i'm guessing two of the wires need to be bridged on the UniChip plug to allow it to run

Can anyone tell me which wires i need to bridge so that the car will run without it plugged in?



Thanks!

 

[FAST_aD13]

Anyone?

 

[bmh.01]

I'm not ultimately familiar with the dastek stuff but it won't be that simple. Got a pinout for the unichip?

 

[MicKPM]

It won't be that simple as the UniChip essentially "tricks out" certain sensor values to be able to do its job. As above, a pinout is required

Mick

 

[sideways danny]

the only wire thats normally cut for a piggyback is the MAP sensor signal wire,

 

[FAST_aD13]

Thanks for the responses,

This is the most relevant (and only) wiring diagram i can find on the net for it (Dastek are useless).



Would i be correcting in saying that by briding the two MAF wires (as described on the diagram) would do the job?

 

[FAST_aD13]

Ok, so by working through the diagram above I bridged the following:
Purple/Red (Crank+),
Brown/White&Black (Crank-)
White/Black (MAF)

This got the car running without the Dastek Whether it cures my original problem is going to be more of a waiting game.