well ima almost positive its a buck . but not that you mentioned it iam not sure . how would i tell the differance between a buck and a miss? and yeah i changed the fule filter about 7 months ago so i know thats alright. was yours doing this too? and if so did it goaway with the S-AFC? iam just lost . but i cant do anything to it for the next week or so its at the dealer gettin the the recal done.. but yeah you have helped.

thanks