I have been open source tuned by my local motorsport shop. And while i know we dont buy these cars to be fuel efficient there still has to be some sort of line. I drive my rex as a cruise around town car. Its not my daily at all, but, when i start my new job it will be. As my current company will take there car back. Anyway i keep shifts below 3000 and long story short my gas is dropping fast. I get maybe 120-130 miles before im at half a tank, 1: is that normal , 2: if i flash the cobb economy map to the car, will it be a source for issues? All my mods are listed in my signature. So if anyone could give me some insight whether its safe or not for what i have please let me know.