YFZ 450

[ts3232]

I am going head to head with a buddy that has a YFZ 450 next weekend but I have a question. His pipe turns bright red right as it comes out of the engine. And I am talking Red. The dam thing looks like it is about to explode. What could have he had done so that it turns that way. I think either his fuel mixture is to rich or his timing is advanced to much. Any have any info on this. My bike is a banshee cheetah cub with a 4 mil, hemi head 20 cc domes and 34pjs on 50/50 VP MS109/91 pump.

[yfzdunejumper]

Stock head pipes do that.

[ts3232]

So are you saying that it is normal for the YFZ to do that with no mods. If that is the case I should be able to smoke him.