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Air Filter Service - Intake system info.

2480 Views 8 Replies 5 Participants Last post by  auditeer, 
Peaty
I changed the air filter for the first time on our B9. It was pretty simple but I did a page anway for anyone interested:

http://www.scoobymods.com/forums/showthread.php?p=28329

I've also included some general intake info. If you look at the page and notice spelling, grammar other general errors let me know so I can fix it.

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E
great write up peaty, how many miles did you have when you changed the filter? correct me if i'm wrong, change is needed at 30K right?
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Peaty
Yes, I think it's every 30K miles but they always say sooner depending on your driving conditions. The filter I removed had 18K miles on it. It was dirty but not really all that bad. I could have rotated it 180 and put it back in if I wanted. If you look at the filter you can see that outside air enters mostly from the upper side and angles down and back as it goes through the filter. That makes it so the side that is towards upper the top side of the pleats gets the dirt first. You can kind of see that in the pics but it's obvious when you have the filter in hand. If you rotate it you will show a cleaner surface to the direct air stream.

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swalker
What, no K&N? I just got my '08 (wife couldn't stand previous front end) and was seriously considering the drop-in. I haven't seen any cone filters yet. Just curious if we'd see any real improvement in gas mileage. Much like you Peaty, my wife isn't into modifying like we are and she's always worried that anything I do will make her car louder. I know the drop-in definitely won't increase noise but would it really make a difference in gas mileage.

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Magic Marker
swalker said:
What, no K&N? I just got my '08 (wife couldn't stand previous front end) and was seriously considering the drop-in. I haven't seen any cone filters yet. Just curious if we'd see any real improvement in gas mileage. Much like you Peaty, my wife isn't into modifying like we are and she's always worried that anything I do will make her car louder. I know the drop-in definitely won't increase noise but would it really make a difference in gas mileage.

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Would a K&N really offer better gas mileage?
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Peaty
A drop in K&N will only really get you a cleanable filter that in the long run will save you money. Not much else.
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swalker
Peaty said:
A drop in K&N will only really get you a cleanable filter that in the long run will save you money. Not much else.
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The money saved in a drop-in wouldn't be realized for 120K miles and isn't worth the time cleaning them.

I take it there are no complete systems yet or systems for an Outback H6 that will fit. I'm not getting a drop-in for the sole purpose of cleaning it every 30K instead of replacing it every 30K.

I know they're still relatively new but we're on the 3rd model year now. Where's all the cool stuff?
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Magic Marker
Cleaning a K&N isn't hard, but annoying. You have remove, clean, allow to dry and they re-oil it. If you only have to change it out every 30k, just buy a paper filter. It's cheaper and easier.
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auditeer
Peaty said:
A drop in K&N will only really get you a cleanable filter that in the long run will save you money. Not much else.
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Peaty speaks the truth...in my experiences with my Tacoma, they ALSO have the added benefit of allowing too much of the filter oil to flow up inside the intake, coating all the sensors along the way with oil, and tripping ecu codes.

Just not worth it, really...unless you like tearing apart intakes and cleaning sensors...:headwall:

On a side note...anyone need a K&N for a 5VZ-FE?:lol:
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