ChrisFrench
New Member
I have a RossTech HEX V2 USB. Never had to use it in anger only for reset service etc. Noticed an increase in fuel consumption over the past few weeks. 40.5 down to 35 mpg. Can this device check the air fuel ratio,MAF and other causes. Checked air filter and connections to MAF etc. No loss of performance that I can detect. Mileage is about 22k. The vehicle has had one oil and filters changed at 12.5K
Thanks
Thanks