k20 jumping ignition idle

[forryk]

Hey guys,

I'm having some issues with my supercharged k20 EP3.
So basiclly the ignition jumps between 5-30* at idle it wont hold steady... So the car "sputters" backfires at idle.

I tried a known working set of coils and traced all wiring, no issues.

[Spunkster]

What is shown in the datalog looks pretty normal as it has ignition controlled idle.

[forryk]

So it dosen't matter how much i adjust ignition at idel?

[Spunkster]

No, it will move around to help maintain a steady idle.