09, C14, 22k miles, no vibrations, runs great, no issues that I know of. I commute 100+ miles a day and it seems to run like a top. I do all of my own service and try to stay up with Kawi recomendations as much as possible, or what makes sense.
I would buy some Vacuum hose (I believe it's 4 mm) then install it on each throttle body and leave it there when you are done with the sync. Route them together and cap them off when you're done and then they will be there when/if you want to do it again.
Nothing worse than having your balls go missing.
Here is a good shim map from Fred Harmon. It includes, on the center tab, all the different shim sizes. My #1 recommendation, don't do any conversions from metric/inches. Get feeler gauges in metric sizes, in .01 mm increments. The shims come in .025 mm increments, if you use feeler gauges with .025 mm increments you may find the valves still out of spec after you put the cams back in. I did.
My #1 recommendation, don't do any conversions from metric/inches. Get feeler gauges in metric sizes, in .01 mm increments. The shims come in .025 mm increments, if you use feeler gauges with .025 mm increments you may find the valves still out of spec after you put the cams back in. I did.