Originally Posted by Razathorn

Well, I think I'm a victim of what I warn others about: needle imbalance. The motor has been working good, but I've been having trouble with it wanting to flame out from the idle air gap being too small. It's not getting hot, not at all, but I believe it is because my top end needle gets way rich and my low end needle is on the lean side. If I keep leaning out the top end, the second burst of throttle can cause it to cut right when I jam on the throttle. Richening up the top fixes this, but it takes away from power and it is a slippery slope to too rich. I'm fairly certain that the low end is just too lean because it returns to idle, then idles up, and once it loads up it goes down to one idle speed (that seems right), then it goes down again to a loaded up state. What I'm stuck with is adjusting idle to where it stays running in the fully loaded state, like if I blip the throttle and it is rich, I don't want it to come off throttle and flame out. But I have to keep pushing the idle down to keep it from high idling. I knew I was on the edge of too lean because further leaning of the LSN and opening of the idle gap produces a very unstable idle.

I think what my major malfunction is that I have been working under the assumption that if it loads up at all under idle it's not lean. This was the case on my v-spec -- you would go from loading up, to not loading up, to high idling as you progressively leaned the lsn... there was no 'too lean but loading up'. If I richen the LSN up, the motor instantly returns to good idle, but it's not very snappy off the line, which is probably really just a result of an overly rich HSN setting I'm betting.

Thoughts?