Originally Posted by offset
I also just went back to looking at the map that was on my Hydra when I got it back. It looks like the Lower RPM Limit is 1200 and the Upper is 6000. Would I be right in thinking that 800 and 4350 like in Phil's picture would be more appropriate?
Here is a rule of thumb, out side of idle (if you notice you don't idle at 14.7 AFR), inside of WOT/high TPS RPM. Rarely to you cruise around at 5000 RPM. Yes you'll accelerate into that RPM range, but under those conditions your load will be higher than closed loop (read AFR 14.7) can handle.
I've been happy with 1500 lower limit, 4500 upper limit. If I find I'm driving around at 5-6000, scaring my neighbors, I'll up the limit to 6000.