ok, car was reving up n down today at the lights, rev needle must of moved 5 times up n down before settling, hasnt done it since, nor before, im thinking of doing a throttle body service on the car, aswell as geting electrical contact/terminal cleaner for the MAF ?? please somelet let me know if it may be something different or if i shouldnt do this... doing a T/B service cause a DTC to set?? should i remove it and clean it with a tooth brush or do it in car then start the car with WOT..... help appreciated, btw Cold Air Intake installed 9,200km ago... have i hit the nail on the head with this idle prob?? or is it something else.... will a oil catch can fix this prob from re-accuring lol??