JiggaFan,
No VTEC. No loose or open connections that I've found ('course that doesn't mean they don't exist - it just means I haven't found any). No other trouble codes since the ignitor was replaced (that was a 15), just the 4.

HatchCX,
If you just changed timing belts and have the same light, maybe this thing doesn't need one. What about your tensioner - did that get changed out when you changed belts?

Anyone,
How many degrees is one notch on that belt? If it's 3-4 degrees and it's advanced, it would idle rough and low, but run like a scalded bear at high end. But what if it were one notch retarded???