Sorry for this question but 90% of the racing I do is 1/10 electric. I was wondering what changes will I need to do with the head shimming to run this engine at high altitudes. I will be racing this engine in SoCal and Nevada to start and I assume that the engine is shimmed for those altitudes. Most of my racing will be done in Utah and Colorado at high altitudes with 30% nitro.
Thank you
Brian