jettaturbogls

I got my Losi 454 the other day. I'm heat cycling it. As soon as I let off the throttle the rpm's climb. I tried closing the gap to slow the idle speed down, as soon as I did it died. Went back to where I thought the needle was. Now I am having a problem getting it to run correctly for 4 min. I am lost on which way to go. My temps are in the 200-210 range. Please help. Thank you.