Oh and the final drive ratio might be your gearing because that sounds about right. 43 teeth in the rear and 16 teeth in the front. Lemme see if i can find it for you.
Yeah from what I can tell you sit at a 16/43 setup OEM. If you go go down a tooth in the front you get accel over top speed or if you go up in the rear it's accel over top speed. If you go -1/+2 (which was really popular on my 636 and other 6Rs) you'll get crazy accel but be careful because she'll be prone to wheelies and head shake (tank slappers) will also be a bigger concern, FWIW. Consider a damper, they are worth their weight in gold. I went with Scotts top mount, it has 3 points of mounting vs. the GPR unit which is just one. However the Scotts requires you to drill and tap your frame and the GPR does not. Scotts>GPR on quality and effectiveness and GPR>Scotts for install ease. I've ridden with an Ohlins damper too which seemed nice but I didn't really push it cause it was a demo bike. The other thing thats good about Scotts is it is universal with a bike specific mount plate. If I buy a new bike, I just need the mounting plate and I can use the same Scotts on that bike too.
HR sells a "Speedotuner" (thats the product name) which appears like it might be plug and play. I had to splice mine in which made me nervous but I installed it in 15 minutes so not too bad.
Oh, my stock error was 5.5% and from what I've seen most guys with your bike where saying 5.5-5.9% which is what we saw on our year as well.