Blown Motor Ecu? Injecotors? Tune?

[Darkon]

Hey,

I'll give the full story,

first problem with factory ecu, driving along dropped to five cylinders all over a sudden

narrowed that down the the no2 cylinder injector not firing due to no pulse from the ecu.

Purchased link gtst second hand for a steal, plugged in and tuned running really well made 211kw at the wheels with standard turbo pump and injectors,

next day car devolpes a miss off boost, which very quicky gets worse and actually drops to five cylinders by the time i get it back to the mechanic,

starting it up again the car has now also devolped a knock (big end bearing) it is quickly discovered that it is the no.2 cylinder that is not firing again by removing the coil lead.

upon removing the spark plug we see that it is absoulutly fried missing pretty much the whole top, we then checked the no.1 spark plug also rooted but not as bad, then we checked the no.3 spark plug perfect?!?

The mechanic has put this down to the no.1 and no.2 injectors been stuffed, although this is still to be tested, my question is...

is this sort of thing heard of or is it more likely a fault in the ecu, been second hand or perphaps poor tuning??? I really want to get this narrowed down cos the new motor (rb30det) is not going to be cheap and i really don't want to have the same problem happen to it

thanks in advance

(sorry about the novel)

[paulr33]

its something to do with the engine, coilpacks, injectors etc.

the ecu won't just develop a problem, and being stock 33 ecu its unlikely to be remapped. even a bad tune wouldnt usually cause that.

the obvious things to me would be:

leakdown / compression test

check coilpacks

find out why #2 is shagged

[Abo Bob]

Yeah I don't think the original ecu was ever stuffed from that story.

I think something to do with the injector, perhaps blocked, faulty wiring connection to it, etc. Cylinder ran lean - bang.

[Darkon]

well originally we lost pulse to the injector, but still picked up a signal going in and out of the injector, the new link ecu got it running on 6 cylinders again but yeah as you said it leaned out and bang