Sard 550 Cc Injectors On A Standard Ecu?/help

[Hunting Lions]

having some problems with my car it has been missing something shocking.

i have replaced the spark plugs as that is the easiest cheap quick fix but that didn't seem to have any effect.

any suggestions as to what could be causing my car to miss?

the best way i can describe it is the car drives fine for about 10 mins then as soon as i go to accelerate moderately hard it misses as soon as it comes onto boost.

then there on after that it does it constantly throughout the whole rev range for a further 5 mins then goes away totally for a lil while.

it has idled like a pig since i got it so the remap which was done on it is questionable so i was going to borrow someones standard ecu to see if that fixes the problem. but i am not sure whether it can do any damage to the computer or not.

any help would be appreciated or other suggestions as to what the problem could be.

ive explored the possiblility of coilpacks as it only does it when the car is hot but i would have thought once they are f**ked the car would miss the whole time.

[R31Nismoid]

stocker ECU wont drive with the 550's.

usual things, could be coils, ignitor pack etc etc

[crack]

what he ^ said

you won't damage the computer, but trying another one won't help either unless it's a remap also. even that will be questionable. sounds like the afm. change with a known good one. if all else fails take it somewhere with a dyno that known what they are doing ie tune remaps

[bubba]

If it's doing it when it's hot then it could be coils or maybe igniter or coil harness.

Mine was doing it due the internals of the plugs on the coil harness disintegrating. I butchered a mates harness and replaced two of the plugs and haven't changed my sparkplugs in months due to not wanting to bust any more harness plugs.

Ordered a new coil harness from rhdjapan last week, it's in Australia and left Melbourne last night.. w00t! I'll finally be able to change my plugs and put my splitfires back in!