Hi all this is my first post but need some help here just got my 01 deuce dynoed it has a power commander S/E heavy breather and samson pipes no baffles it made 72 hp but whats bothering me is my air fuel it says max air fuel is 17 but looking at the graph looks like it starts out at 17 at about 1800 rpm then it drops just about two slash marks lower is this bad or am i ok im gonna try to attach my dyno sheet as soon as my camera charges

 

AFR should be around 13.5.

 

Should it be at 13.5 all the time or would it be ok if it starts out at 17 then drops down to 13 to 14 thanks

 

i did not think the dyno charts went that lean

 

Yup. Most dyno operators shoot for 13.5 across the rpm range... unless it's an eddy-current type... in which case the desired number is closer to 13.8. I wouldn't worry about the bottom end afr being lean like that. They probably weren't at WOT yet.