I have an 09 Street Glide with a 107 build. It has Andrews 54 cam, stage III R&R heads, FatCat exhaust and stock injectors and intake.

I’ve been having a issue with this thing ever since the build, which was nearly 2 years ago. At very light throttle, I can feel this frequent hesitation which feels like the bike is missing. It’s most noticeable below 35 mph on level ground or going down a slope. Again this is at very light throttle – where you are just trying to maintain a steady speed.

I've done everything i can to try and eliminate this problem. It's currently tuned in open loop. I even went through the expense of having it retuned in closed loop but the problem still persisted. I switched back to open loop just because it performs better. The bike runs strong otherwise. I don't notice the hesitation if i'm cruising above 40 mph, or even at slow speeds if i'm going up a grade which requires more throttle.

I'm pretty much out of ideas on how to solve this. I swear i would have already traded this bike if i didn't have so much money in it. It really is annoying to ride this thing in slow city traffic. On the highway it's fine.

Any help or advice will be much appreciated.

 

What rpm is it at when this happens? It might be a combination of the cam and the stage 3 heads. What is the compression?

 

RPM doesn't seem to matter, but i'm usually 2200-2800 rpms while cruising at light throttle. Compression is light 9:8:1 i believe.

 

If you knew the kpa and rpm you could target that area. Remove 3-5 degrees of timing and it might help.