Another thing about spark plugs: make sure to use the exact specified plugs in the car manual. Minsan sinasabi lang ng mechanic na ok na yun plugs na nilalagay nila. nde totoo yun. mas maganda kung exact specs as specified by the manufacturer or better. Naranasan ko na dati, nag pa tune up ako, ginamit ngk bkr6e yata yun, dapat ngk zfr7f-11 or something like that(extended plug dapat), pansin yung difference sa takbo ng makina.

OT: mas madali mag gain ng 5 horsepower maglagay ka lang ng stickers or mga type R
logos and stuff... hehe