Thanks, can you give me the part # for Autozone? I will go sometime this weekend.I got my pre-cat sensors from AutoZone. Can't remember how much I paid, but it was reasonable. I was able to notice better idle and throttle response after replacing them. Haven't done the post-cat sensors as they are just for monitoring. I can guarrantee MAF cleaning in conjunction will yield favorable results. Let us know how it turns out for you.