Thanks for the info... I am learning every second right now and those links are helping a lot.

I am reading up on the IRMC cleaning and will probably do something with that for starters. Although, the power loss being from 1000-7000rpm makes me think it is something else. (shouldn't I only have less power above 3250 if the IRMC is causing the problem?) .... and even when engine is misbehaving, I still feel a jolt of power come in at 3250rpm.

Ponyryd - MIL light is not on and the exhaust was changed to full 3" with long tubes. I think the cats were new as well but I'm going to climb under tonight and take another look.