I have just joined InsightCentral and have been reading through many of the posts about fuel mileage. I, along with everyone else most likely bought the insight for the fuel ecomonmy and the cheaper cost compared to a Prius. I have only fueled up 1 times since buying and the MID showed 48 and when calculated was 44.66. This was mostly city and some urban backroads to get to work to avoid traffic. This backroad seems to keep my MPG up without needed to stop so much and being able to run at 45 mph. I took a trip to Wilmington NC using some highways but kept my speed at 50 instead of 55 and the rest of this tank is the same backroad. I know that the mid reads a little high which is ok with me, but right now its reading 54 even. I ordered a K&N air filter. And I know all the little tricks and have follwed them for a long time in my old truck with accelerating nice and coasting and the tires. But is there any modifications like computer chips or anything that are cost efficent to increase MPG without voiding warrenties. I bought a lifetime, yes lifetime warrenty from the local honda dealer for a good cost and don't want to void it. The warrenty information doesn't provide any clear information and I dont want to hurt it. Any MPG tips would be a great help.