I only know the basic, from my understanding is adjust the cam thru cam pulley and tune with management (piggyback/standalone), hope exp zth member can explain in detail coz im interested too. hehe
1.a matter arise...
my idling is reving up and down..
it goes up till 2k and down 1k...
keeps on repeating...
last time when i turned on the aircond it will slowly disapper,
but now when i turn on the aircond the...