i believe the problem is apparent. 
look, i think u gotta stop doing all sorts of silly stuff to ur car
and complain that u suay that its giving u probs while u are at it.
its like blaming god for giving u a cold when u are the one who
chose to walk in the rain. chinese call it zi zuo zi shou.
btw, sunny fc hi is old news. u can improve it slightly by
following some of the sound advice dispensed by a handful of
knowledgeable members here but i honestly think that u'd be looking
at buying another car if u wanna see any significant improvements
in ur fc.
IMO, ur biggest mistake was buying one for the pure sake of
"liking" it without fully accepting all of the nuances of owning
one.
