Originally Posted by shein95

I've had my sc10gt for almost two months now and has been running good but has developed an odd tuning issue. Once running for a while it starts to load up and stall off idle. I'm also concerned about temps, this motor has been running around 250-260 even with cool ambient temperature. I'm getting lot of smoke in the mid throttle fading on longer wide open runs. Running byrons 25% race blend and mc59 plug. Plug used to come out grey but is now much darker. Thoughts?