jetting in the rockies

[rockymountain250f]

i live in the rockie mountains in colorado. I have a 05 yz250f. I have a 170 main and the pilot one notch from the top. My bike seem to ride good but what else can i do.Elavation is 7-9 thousand feet most of the time. All i have is a k and n and a yosh pipe

[Wayward Son]

your way rich on the main jet still.

drop to a 160,3rd needle clip.stock pilot jet works fine.2 turns or so on the fuel screw.

[Phacops]

I also have an '05 YZ250F and I live in CO--front range. This bike is new to me and I am trying to help the bog. I just put on a Boyesen Quickshot and I am also thinking about a Powernow. I already have a Dr D and that helped quite a bit. I was really wondering about jetting settings for 5-7000 feet as that's where most of the tracks are that I ride. My carb is stock other then the new APC. I am considering a bigger pilot too.

I welcome any advice.

Thanks!

[Wayward Son]

the stock pilot jet and needle clip work fine.

fine tuning the fuel screw helps alot.

[Phacops]

I forgot to mention I have the ziptye screw already and that does make life way easier.