hi,
i just bought second hand ULTRA speed meter and i want to install it to my car.
unfortunately, i dun have the manual for this meter. Can anybody help me?? Pls..
Wonder, Wira 1.6 Auto. This engine did not have o2 sensor for close loop. When tunning, they only allow to adjust the VR,variable resistor ( Lean or Rich ). My question is, how the stock ecu know that the a/f in...