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Per's RS4

:

K+N Air Filter

A place to track things regarding my 2008 Audi RS4

1/21/12 K&N Air Filter

 

Yes, I went ahead and did the high horse power gaining K&N air filter install ;-) Purchased the K&N 33-2209 from Amazon and installed it tonight. What I was most surprised about was what I found in the air duct screen that leads into the airbox:

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I would've thought there might be some debris in there, but never thought it'd be that much. Wonder how much HP I gain with just cleaning that out? ;-)

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Anyway, nothing too eventful from there. Had this awaiting me within the air box:

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And found it a bit interesting how skinny the K&N is in comparison to stock (is that the reason for the supposed performance advantage? ..or potential reason why it might be 'bad' (less material to catch things?) :

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Nonetheless, a good fit and we're done. I'll update this once I've driven a bit on it.

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