problems mentioned at the start of thread.
slow initial response, smooth and consistent drivability afterwards, fuel consumption and abnormal gear shifting and most important is weak engine compression
Engine compression improved from 120 to 180 now...pick is now solid
fuel consumption....12-13km with 100% Aircon and heavy feet in city driving...complete in tank fuel system replacement which helps
Transmission shifting...smooth and timely shifting under all conditions...transmission valve body was serviced
Many rounds of Liquimoly fuel additives to clean entire system...lesson learned to use high octane or use OCTANE BOOST for smooth running as JDM cars are Euro4 fuel compliant
plugs changed to laser irridium
air filter was replaced with toyota genuine but that even perform so got "KABLI" original air filter from half cuts...trust me the car runs and sounds smoother with these JAP parts...collected a few from junkyard to save time till next visit.
beside above many little steps to improve the drive....the car now runs like a charm