Originally posted by dato1000
I have my hyper 21 in a monster truck, its goes alright but latly its been cutting out wen i go flat out then back off then hit the throttle again, I dont know wots going on? can any 1 help me??? thanx
I'm guessing the weather in your area has changed quite a bit. I have the same problem. Just re-adjust your low/high needles until you get it to run the way you want. I experience the same problem, as it seems that this engine is really sensitive to changes in the air density and humidity.