Up-most importance in your situation I believe would be to provide QUALITY tunes, if you are going to be tuning them yourself. As we all know anyone can load a preloaded map, but doing it individually on a per bike basis would be the key.
Also, to help bring in a little more business, I'd offer minor maintenance for them available at the same time (synthetic oil change, change plugs, etc.)even the small things like an oil change when you make a dyno run will give a higher hp than with older oil (so your making your dyno runs look better as well), and other "performance upgrades" such as velocity stacks, air filters, etc. In the shop world you make your money on labor, not parts, so the more small items you can sell, the labor time then adds up, especially when you become efficient at the minor stuff. I would highly advise limiting your mark up on parts, and make up for it with customer service and good labor pricing. All the successful shops I've worked at have worked that way. People feel better about paying for quality service(s) when they don't feel raped on the parts end, especially when people can go online easy enough now and look at pricing on parts, and when you can see online that they are getting a "good deal" on the pricing compared to what they are picking it up for at a local parts store or online, or then you'd be looking at a lot of people bringing their parts to you.
