06 YFZ(cam mod,Lid off,Aaen pipe)

[cannondale27]

I have most of the database from this dyno.If you want Anything posted let me know.

[Mobile Dyno]

Nice Power. Can you post the TQ graph. Looks like you could have went one up on the main? What was your final jetting?

[cannondale27]

Thanks.We didnt hook up the tach so no torque readings.I had the dirtbike needle 2nd from top,168 main and dont remember what pilot also backed off accel screw 1/2 turn.Did need to go up to a 172 main and 1size up on pilot for winter.

[Jonas]

Mobile, do you have any good rule of thumb on jetting for cold temperatures on these 450's w/FCR. Like if the last time you rode it was 60 and now it's 30 what's your opinion on a jetting change for that and what have you seen with your dyno under these circumstances?

[cannondale27]

I found that at about 35 you could get away with 1 size up on main and fuel screw adjustment.Any colder and it was 2 sizes,pilot and below 20 clip down one.Seems like my YFZ really likes to run right on verge of being lean.Nothing I have ever owned was so fussy with jetting-vs-temperature kind of a pain.