Originally Posted by
spaceworm
I had same experience, along with blowing plugs, with my Como .90. Also same with ASP .91 and 1.08. I now use no more than 5% in most of my 2S engines.
No argument about % of nitro if the you're satisfied with the performance. It's easier to back off the nitro than have to experiment with glow plug heat ranges in your engine to accommodate the nitro percentage. It has seemed to me that my 2 stroke .40 to .61 engines throttled better on 10% than on 5%. I don't have any 2 stroke .90s though, except a 3000 that I've run on various fuels including trying it on E85 with CD ignition.
CR