I'm going to be installing the dynojet jet kit this Saturday on my 400ex, and I was wondering if anyone else has used this kit? I will have my Yoshi slip-on pipe installed, and a K&N w/outerwear. Are the recommendations in the kit good, or do they tend to run a bit lean? My buddy said the recommendations for his Raptor kit were way off. He had to really fatten up the main jet to get good results. I know alot of people will say take the kit back and just buy a couple jets, but I think this will work if done right. I will be riding mainly between sea-level and 3000ft. Please help!!!

 

When me and my buddy installed ours it was right on. His was on a 400EX and mine was on a Raptor.

 

I installed it on my 400ex and the settings were right on, I thought it was an improvement on touque

 

Yep, the kit was spot on with the recommendations. After putting it in, the filter, and the pipe, my bike has alot more get up and go.

 

The reason for the recommendations being off for Raptors is when the air box lid is removed. Dynojet does not have a recommendation in the written instructions. You have to call them.

/NotuRaptor