i dont know if you guys remeber the mass air flow issues i thought i had. a common problem tends to be that people run into mis fires randomly or after punching the throttle. but i tried everything i even paid 500 dollars for the new MAF. but it turs out if you take the plastic cover of the engine and the plastic cover in the front off you will see the spark plugs. I changed the spark plus with the platnum tipped spark plugs, with 4 eletrodes. the old ones were black and the gap was way to spaced out. and i notied the little plastic vaccum tubes beside it were cracked and broken. i am guessing all of them may be prone to becoming brittle. anyway i bought like 1 dollor of rubber vaccum tubing and it slips right over the old broken parts to connect them again and with the tune up it cast me maybe 40 50 bucks to do my self it was extremly easy you just pulled them straight out. I used to ave severe random misfires. now nothing it runs like brand new and hasnt acted up since.