lean or rich.

  1. L

    Removed Air Filter - Running Too Lean?

    Hey Everyone, I am constantly tinkering with my first build - I can't seem to get it to run quite right. I am running a YD100 engine with an NT carb mounted to a Mongoose dirt bike. I've recently done some modifications but now my bike runs TERRIBLY. Can't even crack 5 mph on flat ground and...
  2. TheSignGuy

    Surging at wot down hill mainly

    Was up, So I've installed a banana pipe it has massive torque but from time to time it surges at wot specially going downhill. I re-angle the motor due to idle spikes but I've solved that issue anyway if my motors bone stock with the actual banana and not the crap berry version, Would...