I'll second the fact that the tune works great with the LeoVince SBK underbody exhaust. I posted my initial review back on page 3, but didn't mention that I'm running with an aftermarket exhaust. I discussed it with Steve before buying, and he said that while he understandably couldn't confirm performance with an aftermarket exhaust, it would likely be fine and that intake mods would have more effect than exhaust. My intake is 100% stock. The tune is still running great and a night-and-day improvement over stock.For those interested in this flash AND an aftermarket exhaust, I have about 2000 miles on my 2016 with the flash and LeoVince exhaust, about half of that with the 'baffle' insert in the exhaust, and half with it out. It runs very well with this combo, I prefer it with the baffle out and will keep it that way as throttle response is just a touch quicker and it really rips when getting deep into the throttle(also sounds much much better). I was making some effortless passes without needing the usual downshift in NM last week.
I calculate my MPG on almost every tank and cant say the tune has hurt mileage at all, just like before its wholly dependent on the right hand. On this last trip I saw a low of 44mpg after 100 miles on SH130 to and from COTA for MotoGP (85mph speed limit), and a high of 66mpg after 100 miles of slow and lazy backroads around Santa Fe, NM (high altitude helped I think). Average mileage about to 50-55mpg which is what I was seeing with just the LeoVince exhaust for 5000 miles before the tune was added.
Initially I was a bit hesitant to grab the tune as it was developed for bike with stock exhaust, but I couldnt be happier. So much smoother on the bottom end, and noticeable increased pickup through the middle and in the higher revs. Worth every penny, thanks Steve!
Good news for all you 17-18 owners! You can finally join the club and enjoy a much better riding experience.
A few folks talked about adapting to the stock behavior of the bike, but that's not applicable here. The tune doesn't just make the throttle a little smoother, it makes the engine feel like a parallel twin should feel. If I wanted to be restricted to riding around town at 5000 rpm just to keep the engine happy I'd buy a super sport. The Versys is supposed to be versatile: good for a wide variety of riding. With the tune you can still romp on the bike at high RPM, but you can also roll through town at 2500 rpm and enjoy the torque a twin is supposed to provide! My last bike (Suzuki GSX-650F) had some throttle snatch and I adapted just fine. With the Versys it was the combination of the snatchy throttle AND engine character in the 2500 - 4000 RPM range that didn't match my experience on older bikes with this same 650 twin engine. I'm not interested in adapting to an engine that's not performing optimally due to crappy tuning because of emission requirements. I'd much rather pay $250 and have a bike that runs properly. I bought the exhaust for the sound, not for performance, and I have no desire for any other "performance" mods. I wasn't chasing more power with this tune, just an engine that runs like it should.