Obvisouly when we truck/SUV lovers go out and buy these hogs we expect poor gas mileage. Just curious if anyone here has experienced decent mileage gains by changing air intakes, computer chips or installing some "as seen on TV" mod like the "Tornado."
intake and exhaust will help. chip is marginal especially if using the "performance" setting. the tornado will not do anything unless its a TBI type set-up. and even then the gains are arguable and vary person to person