I actually took it to a dyno when i first had installed the exhaust and power commander.
so heres the whole story, maybe you'll have more of an idea.
A buddy and I installed the exhaust and power commander. Well, sadly, we mishooked the powercommander and a ton of gas came out of the exhaust. I took it to a shop and they did an oil change, filter change, spark plug change(if i remember right), and then hooked the power commander up and tuned it on a dyno. The mechanic basically said right a little then get another oil change to make sure everything was okay.
Well I didnt ride much after the incident. the incident was a couple years ago. I just recently had an oil and filter change on it, as I am planning on riding way more. The mechanic said everything was fine. But for whatever reason, i get about 90 miles on a full tank when I used to get 180. Any idea on cause for this? Or what to do? I have to go pick it up in the next day or two, as i got new tires put on. So hopefully i can fix this issue so i didnt just waste a bunch of money on new tires.
Sorry its so long!!