I just went over 15k so it was time to replace the air filter. Bought the K&N on EBay for $31 + $10 shipping. Will tell you after a couple tanks (I go thru a tank a week) if there has been any improvement in power or FE.

CAMRHEE Hybrid
Completed Mods: RK-Sport body kit, 18" LexusGS430 wheels 235/50ZR18 tires, TRD/SE springs, Rear Lip Spoiler, Terk XM-Direct, Smoked tail lights, Sliding Armrest, Rear Bumper Applique, Front License Bracket, Lower Grill chrome inserts, K&N, Blaupunkt THB200A sub, moved rear HSD emblem
Future Mods: fog lights, black chrome my wheels

http://www.greenhybrid.com/share/fil...fterFront4.JPG