MAPed Blue Top Swap, NOT staying running! Please Help?!

[jondee86]

Quote:Doesnt matter how you connect the injector pairs, those two outputs on
the ECU are connected internally on the ECU's pcb, so it fires them all at
the same time anyway.

I am aware of this However, if you are using a factory loom, the
downstream side of the injectors will be wired as I described, and can
be traced to make sure there is no wiring problem.

But the main point I was trying to make, is that when using the ballast
resistor, there are two separate feeds out of the resistor, each feeding
two injectors. If you wire the two outputs of the ballast together, the
internal resistors will be in parallel instead of in series. Therefore your
injector circuit resistance will be wrong.

By all means check that the igniter has a good earth, and certainly check
that the earth on the head is secure... both are common causes of
poor/erratic running.

Cheers... jondee86