K&N air filter for 04 subie

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Sep 22, 2003 | 12:25 PM

Slaya

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K&N air filter for 04 subie

I have heard that installing a K&N air filter will fry my mass air flow sensor. Anyone have any input on that??

Sep 23, 2003 | 09:41 AM

dj_noose

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No... I've never seen evidence to support that statement.

As for me, I'm running a CAI. I've had this setup for over a year and no fried mass airflow sensor.

Sep 24, 2003 | 07:19 AM

shaggamag00nie

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I think the concern I've seen posted in the past, is after cleaning/recharging the filter, you don't let most of the oil to drip off before reinserting the filter. Some people seem to have problems with this extra oil gumming up the sensor. I've used these filters on the two Honda's and one Ford I've owned, and didn't have any problems with the sensor. I usually allowed plenty of time before reinserting. But since this is my first Subaru, maybe the WRX sensors are more sensitive.

Sep 27, 2003 | 03:41 PM

Slaya

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I heard this right from the Subaru service shop, so I thought I'd see if anyone else has acytually experienced it.
THX!

Oct 22, 2003 | 11:24 PM

hyp36rmax

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Joined: May 2003

Posts: 43

From: SDF-Macross

Car Info: 2004 Impreza WRX Cobb Spec

as long as you do this lightly and carefully, you'll be fine, and going this route is actually way more efficient esp if your staying within 300bhp crank range, cause the stock airbox is very effiecient.

never oversoak the filter with too much oil, it will mess up your maf sensor, mind you it can be fixed by cleaning it.....