well not high milage but in the 10k range. go check your air filter. mine was all dirty and needs a new one soon. i have everything in their from leaves,grass and bugs to dirt and a small rock. this was at 10k i also blew out the air filter not much came out but theirs still allot in their. so my advise is to go and check it atleast it takes 5 min total.

I'll look at mine tonight. 18k/5m on original air filter.

Have you guys noticed that they all have that bit of heat shielding falling into the airbox? Mine and my dad's both are, as are all the other ones I looked at.. What's up with that? on the older trucks they had a a duct there leading out into the fender and into the front.. Now it's just open there with some cruddy heat shielding...

Cleaned out mine this weekend, had some bugs and dust at the bottom on the canister. But the filter looked great. 11 k miles

Mine was fairly clean, but I replaced it anyways.