No mods, the car is pretty much completely stock except for a new set of tires I just put on and some K&N airfilters I put in a long time ago. Not the cone ones though, just the normal ones that fit into the normal airbox.

I did try to pull the engine cover off to take a peek at the engine a little while ago though, and once I realized that the intake was connected to it, I didn't go any further. I pushed it back on though, and I can't see how this would affect anything.

Interesting. Well I'm glad that at least I'm not the only one experiencing it.

On another side note, I've never put the lower grade gas in it, as much as I'd love to, with premium hitting 4.69 here, UGH! Get ready for $5 a gallon everybody.

The car is an '04 with around 43,500 miles.

Brad