Spark works for me now too :) Datalogging the stock ECU at idle, it see's about 5-8 degrees of timing advance, so that is what i set the 4 bins at idle, on the MS spark table. Idles good, and only has a 100 rpm surge. I think by having the stock coilpack trigger wires disconnected from the ECU, it's freaking out a bit, and may be making the stock IAC go a bit less controlable at idle, which is why it could be surging. That's just a guess though. The mitsu ignitor stays only lukewarm at idle, so looks like the dwell settings of 3.5ms, is a good match for our coilpack.