Not Happy w/Dyno

I'm new to cruisers and Harleys. I was previously a sport bike rider. In January of this year I purchased for the first time a brand new 2007 VRSCAW (V-Rod). Two days after my purchase I visited my local Harley Davidson (HD) to get ideas for customizationt. I spoke to an HD salesman, who owned and road a V-Rod, to get advise on a louder pipe. He recommended V-mod. Then he very strongly encouraged me to have my bike Dyno'd instead of using a power commander. I knew nothing about a Dyno before meeting him; however, his deep sincerety caused me to do it. The Dyno cost me $850, not including the pipe which was extra. After having my bike for a month I realized that I was stopping for gas twice a much as my fellow Harley riders. I was averaging abou 27 mpg. I went on the internet to several Vrod and Harley chat rooms and asked why. I found that the Dyno cut my gas mileage nearly in half. I WAS LIVID AND STILL AM! This result was never mentioned to me by the salesman. Had I known that my gas mileage would worsen by 50%, especially with gas prices as high as they are, I would have never gotten the bike Dyno'd. Now it doesn't benefit me to ride my bike to work instead of my car. Can someone tell me if there is a way to reverse this Dyno mapping and reset my bike, what are the cons. . .and how much would it cost?

Cowboy,

I'm having a coronary reading your reply. I have to conduct some research on the cost of dyno's. I went to a different Harley dealer this weekend to inquire and they all seem to protect the work of the other dealers. I was told that the dyno was necessary because of the pipe addition I added. The price is vintage Harley.

Bones

bad dyno operator

WE won't even talk about $$$ you spent .Did they install a HDracetuner ?
When properly tuned you should get better milage and performance.I own
and operate a dynojet dyno 9years now and I have seen first hand that just because a shop has a dnyo doesn't mean the know how to use it Let me know what tuning software you have maybe i can help