Just did my e85 tune and switched the periphery so it would start right up but when the coolant is cold for the first 2 min maybe the idle will fluctuate from 500rpm and jump to 1700rpm. After the coolant warms up a little bit the idle stabilizes and everything is normal. Any ideas how I can remedy this issue? It almost dies when the rpm drops by the way.

 

Perhaps adjusting the idle stepper map, like adding 10 to the areas where it sounds like its going to die would stop it from getting so low.

As for the high, I don't know.