My 2002 95" FXDX

[Brutal FXDX]

95 " Twin Cam stock 4.0" stroke 3 7/8 bore
S.E. non ported HTCC Cyl Heads
S.E high HTCC pistons 10.5:1
S.E 257 cams
S.E. Adj Pushrods
S.E. Hydraulic tensioner conversion W/ hi flo oil pump
S.E. ignition
Mikuni HSR 42 Carb
Thunderheader 2-1

 

[Hoople]

Nice but remember that this A/F ratio plot was taken under wide open throttle and not at partial cruise. BIG difference. You are WAY too lean from 3500 RPM to red line. If I was you I would fatten up the mixture by at least 1.5 ratio points. And expect to see more power from doing it!