Wrapper

[TRD VVTi]

Actually, they are less restrictive. That's a fact. That being said, they do increase power. That is also a fact.

As far as ruining sensors go, that only happens if you over oil the filter. The air does not get enough velocity to carry the oil UPWARD.

Why don't the manufacturers install them? I'm sure it has alot to due with cost and convenience. The K&N and TRD filters cost 3-4 times as much as a paper filter, and it's doubtful that Joe Blow would ever clean it. They could add the best oil, best tires, nitrogen in the tires, better light bulbs, better oil filters, etc but the added cost of every little thing would either drive the cost of the car up, or the profit per car down. Neither is acceptable I'm sure.

You won't really notice a performance advantage because our 4 and 6 cylinders don't make much power to begin with. When you get into larger and more powerful engines is when you will see a measureable difference in power.

I'm having a hard time believing that they actually filter less. If that was the case they wouldn't meet the manufacturers specifications. I would like to the see proof for that one, but that's not going to happen.

I've driven my Formula for 239,000 miles with a K&N filter and have NEVER had a problem with the MAF or dirt getting in my intake due to poor filtration.