We just finished racing The Dirt Nitro Challenge here in AZ, and I needed to post how much I appreciate all the information I have gathered here over the last year. I ran the GX5R with Dynamite 086 hardcoat in truggy, and GXII5R+Go2072 in buggy. We had temperature swings of 30degrees F, and both my motors ran all week without any complaints or hesitation. I noticed a lot of guys having really terrible luck with their engines, but mine couldn't have been any faster or more reliable. I spent all week stealing lunch money down the 250ft straightaway, and changed plugs for the mains. You can't get any easier than that. I went from 14th place to 6th place in the Truggy Open B Main, and bumped twice in buggy before breaking the front end on an overturned car.

I also really liked the 12V Competition Heat motor warmer I got from Moto Matt at Nitro-North, and powered it from a 3s lipo.

Easy starts every time, great power on the track, not a single flame-out all week.