well 1st of all i have a 1993 sc300 w/ 130,xxx miles, when i bought the car it ran fine untill all of a sudden it started misfiring, a friend of mines told me to do a tune-up so i recently replaced the spark plugs, wires, cap, rotor, fuel filter and air filter. after the tune up i havnt encountered any misfiring untill recently. the other day i was driving and i kinda punched the gas a little and all of a sudden my car strarted putting like it was misfiring again, it must of lasted for like 3-5 min. then stopped, the CEL didnt come on or anything. any ideas on my problem guys?