I got sensors calibrated but fuel average has fallen a big time. That guy also tunned the engine and I also got my AC Compressor changed because older one was making strange noises.
But after that tuning, I was facing idle issue, that is fixed and I just checked my fuel avg which is fallen to 6 to 7 from 8 to 9. My car never ever gave me less than 7 and on long route 11 to 12. But now its giving 6 or 7 in city and 9 on long route.
I need to tune it again and change spark plugs?? or what?