So, I realized I never followed up after my bit about the odd vibrations Sonja was suffering from. It turns out that there was nothing wrong with the ignition/fuel mapping. The torque curve was sweet, the HP curve was nice and linear, and the AFR was damn near spot on.
The issue was a change that the MoFo MoCo made in the compensator sprocket setup. A change that introduced a gap in an area that takes a ton of abuse. Harley’s fix: a shim that sits between the bearing and the sprocket. Relatively quick and painless fix.
The end result? I’m finally riding on a big twin again (vs. the epileptic with tourettes that I’d been riding for quite some time now).
At any rate, I showed you the missus’ bike in the prior bike post. Here’s Sonja…