Enthusiastic.Learner Bro
Is it possible that the O2 sensor gives normal reading on scanner but still spoil fuel average ? Same question in regards of Cat Con and MAP sensor etc ?
I am asking cos i am getting poor fuel economy despite, as per scanner, all values everywhere are within range, ground connections have been cleaned, car is aligned with no axle or bearing issue, 0W-30 fully synthetic oil, 75-85 fully synthetic ZIC gear oil , Zic coolant with T Valve , new air filter and its sensor clean, BKR6E 11 iridium plugs with gap 1mm, good ignition coil and chords, never exceeding 2500 to 2800 RPM during driving except on freeway , good battery and alternator etc. No issue in starting at all or missing.
Only thing objectionable is top speed restricted to 135 kph