Hi All Sifu,
i have something need to ask and know about our Airtrek subframe (front) & (rear).
Our front subframe if want to convert to EVO, version 7 to 9 is can fix, right? if only take the EVO lower arm to fix on...
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...