i'm tryin' to help u out.. coz i know how u feel.. i also experienced it before.. so any sifu care to help dis guy as well? share share la..
here's wat i've done to my car n no effects ..
1> spark plugs - wun really affect much leh.. i changed twice loh..
2> auto transmission fluid - yours is manual. .no need.. hehehe..
3> change petrol use? - petronas, shell, mobil, esso, projet? all the same la..
4> O2 sensor - checked.. but also nothing happen leh.. u go n check if it's in working order.. if gila gila means it tells ur ecu to instruct the injector to syok syok inject petrol.. then fc bad loh..
5> muffler piping - go n check la.. like i said 1... my frens' wira..
6> air filter - changed 3 pcs all new n diff. brand .. K&N, ori accord filter n taiwan.. all no effects...
7> wat else hah?
at last i changed engine coz my engine's bearing kong already.. mayb yours also? ur engine start to eat oil fluid..