3.6 - K&N Filters, TRD Filters (and other aftermarket filters) (All)
Description
This article is from the Toyota Tundra FAQ, by Steve Yee with numerous contributions by others.
3.6 - K&N Filters, TRD Filters (and other aftermarket filters) (All)
K&N is a well known manufacturer of aftermarket filters that is used by quite a
few racing teams as well as many performance enthusiasts. K&N states that if
you use their filter, you will see an improvement in engine performance. The
filters have a million mile warranty and can be cleaned by the owner. Regular
maintenance is recommended at every 50,000 miles. The filter part number for
the Tundra is 33-2144. K&N's website can be found at www.knfilters.com
Installation of the standard K&N Filter is easy. Pop all 4 retaining clips off
of the airbox. Remove the stock Denso air filter. Replace it with the K&N
Filter, making sure that the seals are properly fitted to the rim of the
airbox, and that the deeper part of the filter is pointed down. Reattach all 4
retaining clips.
Some people recommend "resetting" the vehicle's computer, and in some severe
cases, the "Check Engine" light may come on. If this light does come on,
perform the following procedure:
1) Disconnect the negative lead to the battery
2) Leave your truck alone for a half hour or longer
3) Reconnect the negative lead to the battery
4) Start the engine
5) Either drive for 10-15 minutes, or leave your vehicle in drive with the
parking brake on for the same length of time.
There is a series of well known threads on USENET that state that K&N filters
can damage your Mass Airflow Sensor (MAF). This has occurred to some USENET
posters, however, this damage has not happened to any of the author's personal
vehicles or any of the author's relatives' vehicles as of yet (yes, my
immediate and some of my extended family all use K&N Filters in most of our
cars and trucks !). This damage to the MAF sensor could theoretically occur if
the filter was over oiled and oil droplets were to contaminate the MAF sensor.
There are other aftermarket filters available. Some of them do require the
modification of the air intake. One of the more popular filter/air intake
modifications can be purchased from Rod Millen Motorsports. Rod Millen is a
race truck driver who races for Toyota in both a Toyota Tundra and Tacoma in
C.O.R.R. and Pikes Peak racing. His shop offers many aftermarket products and
can be found at www.rodmillen.com.
Toyota Racing Development produces both a washable and non-washable filter for
the Tundra.
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