High protein diets and reducing the sugar carbs is claimed to alter insulin levels which helps the body burn stored fat. This is why high protein diets are good, they help the body burn fat more efficiently. Carbs are only quick energy, and if its not used, it turns to fat. Instead of eating on your rides, take a bottle of gatorade or similar for energy. Do longer rides, go faster, and hit some hill. I did 40 miles today and only ate 3 oatmeal granola bars and a protein bar the whole day, plus 2 liters of Cytomax (like Gatorade). I ate a bunch of protein, tuna, when I got home.