[Overdriven]

I ran a 14v in mine for awhile, and it did well, its now a winter setup though. A friend stuffed a 18v in his emaxx. His gearing was about the same and so was the performance. So I say run the 18v if you got it. I abused my 14v with temps reaching 175 at times, no loss in performance over dozens of runs, so they can take some abuse too.