Installed JSD - 3M on 2008 C109 a couple of days ago. Had a difficult time getting connectors loose. After that it was easy. Bike runs much better, no detonation, no high idle everything looks and sounds good. Bike still seems to be slower than my VTX 1800. Could this be that it is geared higher? 109 has 117 HP compared to VTX 107 (at the crank). Guys on VTX forum say quarter mile time on C109 is 12.6? VTX is supposed to be 12.2. Looks like rev limiter on 109 is higher than vtx. VTX is 5250. What is rev limiter on C109 set at? I like riding cruisers but still like quick take offs. Looking for changes I can make to get a few more HP here and there.