Hey guys, ever since I have brought my VX l67 I havnt been happy with my fuel economy, strugglin too get 400k's to a tank even highway driving 50k's+ average speed. So ive replaced o2 sensors, cleaned MAF and also a full service and I run 98 premium fuel, it also seems im using more fuel after I replaced my o2 sensors and cleaned my MAF. So im out of ideas guys hence ive made this thread