"Installed the chip after getting customer support for wire hookup and initially it made it worse(gas milage) and i know the site says could take a while to adjust and learn so i have waited 10 fill ups and approximately
5000 km's. i have the option on the dash that shows gas consumption I have since unplugged it for the last fill up and got better. Unit tested bad. Sent it back and got a full refund as promised."