hi, im using 4g92p sohc ecu..it is possible to tune my stock ecu and check the AFR/ignition problem??
coz i hv a problem wif my car when speeding at 100+km/h, got soung like bell,"krenngg krengg" and i felt the power...
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...