I have an 08 SG that I put Python Slip Ons and a stage 1 air cleaner. I purchased a Power Commander off the internet that was pre loaded for my set up. Since installation, I get very poor mileage(175mi to tank vs. 220stock) it sometimes dies at stoplights and smell of gas in garage after riding. Will unhooking PC hurt anything? I don't want to blow it up but I want it to run good also. What is the best solution? I am new to HD world so don't beat me up.