saytheb

iTrader: (2)

Not throwing any O2 codes? I'd figure you get a lean code if you're running that high... sure the sensor is OK?

I was having some similar crappy idle with high AFRS (17-18s) and extremely unstable timing.. If I applied throttle it would try to die, then suddenly it would run perfectly fine, I'd let go and it would calm down, then go back to horrible idle. I threw some front O2 codes a few times.. ended up checking the sensor and unplugging/plugging back in a few times during the ordeal. Codes gone, and idle is solid again..

tephra

iTrader: (6)

No CEL's.

The lean code hasn't come up because the trims have maxed out (because on the ID2000's we run openloop idle)

We swapped in DW1300's and the same problem exists, so I threw a lot more fuel at it and it seems better.

I am waiting for some feedback on the new ROM I sent him, so we shall see.

It's weird that all of a sudden the car needs heaps more fuel.... I doubt a head change would have that affect.

I still think its something else, but I will explore the fuel a bit more first...

scheides

iTrader: (10)

I had a really strange problem on my car when I got it back together, and it was all due to a bad ground. On my car it was the one that goes around and bolts just under the starter. I had bolted it in above the starter to a spot that had poor connectivity.

Look through the manual and triple check all grounds. You tried a different set of injectors so maybe that is not suspect, but perhaps a set of stock injectors? What fuel pump is in this car, check that?

I had good luck getting my car to idle w/ the bad ground still in place by unplugging the MAF. It wasn't a long-term fix but in the end it did help get the car running at least.