i've done my eco test yesterday and seen tht got high hc ppm @idle..
@idle -455
2500rpm-160
but i passed..but i need to refersh wht tht was...previous report (last year) it was 160both...why is tht..wht are the problems..and where it was..
i changed oil,change,spark plugs(oem ngk),change air flter(vic) too...
smell some pertol @exhast silencer also..
car -eg8 singlecarb