RE: Kyosho inferno st US sports engine break in problems please help!!!
I broke in a GXR28 with 15% nitro. Remember that they are a pig when new and run like crap. One thing to also consider is air leaks, the GXR28 is prone to them, and they can cause havoc with your tune. Check the sticky titled "Nitro Guide and FAQ's" in the engine section. It will tell you how to deal with airleaks. Oh and BTW, a Glow engine will run on 0% nitro fuel