A 2006 Toyota Prius one owner?

Bluto has it right. The K&N filter does not filter very well at all and WILL shorten the engine life. K&N filters are basically something you sell to dumb kids. At one time racers used them because they have minimum filtration and maximum airflow, but that was back in the days when engines had carburetors.

The only thing your Prius needs is a stability plate (about $200) that you can purchase from http://www.priuschat.com/

I would pshitcan the filter you have and install the Toyota OEM unit. It is far superior at keeping dirt out of the engine. I would also ditch the wheels in favor of the stock size fitted with Disc hubcaps from Hubcap Mike. Body kits and other rubbish take away from what that car is best at. It's not a performance street machine. It is an efficient gas sipper. Treat it like one. Now go remove that garbage you have put on it.

Before you use wax again, take a look at Fire Glaze Polish Sealant. You will get a high gloss mirror shine that will make your paint pop, feel silky smooth and look like glass with a few coats.

The light blue color is called Seaside Pearl, the dark blue is Spectra Blue Mica.

http://john1701a.com/prius/prius-colors.htm

JerryJ and Bluto are right on track. Toyota and K&N do not go well together, but that body stabilizer gets nothing but rave reviews.