Hello, good day i have an s15 with an sr20de all stock except for headers(M/T), i have a few questions regarding it. the car when started in the morning idles at 1800rpm. adjusted the timing idling etc. and still does the same. weather here in Manila is (31-34deg) is it normal? another question is my fuel consumption i get 1:6.5(shifting 24/7 1800-2000rpm lol) liters of fuel due to idling issues. 1100rpm with air con on. (adjusted screw on intake manifold to idle at lowest) my friends usually get 1:8-8.5 on s15's. I cleaned my maf sensor already/intake manifold/contact points/changed oil/filters/plugs blabla etc. was searching here for similar problems. can it be the O2 sensor? what should i also check for my fuel consumption problem ? thank you
