craiglieberman

Guys;
Just installed a 33-2209 K&N on my 07 RS4. Throttle response was improved, but no real "kick in the pants" from any large power gains.

A cold air intake is in the works by K&N.

The K&N panel filter is a simple replacement, although getting the stock airbox apart takes a few minutes.

We did not dyno the vehicle before or after, but K&N estimates that on this motor, expect gains of up to 5hp....and it'll be the last air filter you'll ever have to buy

Reggie

craiglieberman

No one has done this mod on an RS4...I've checked every RS4 forum around the globe.

Therefore, and knowing what I know about the true causes of MAF failure, I have great confidence.

However, I will happily report any issues and share my experiences here.

RI A6

Otherwise, you'll never know if you're ingesting more crap into your motor than you'd like. K&N filters are great for increasing air flow at the expense of filtering.

daveak05

and some is bound to get thru.

RI A6

Generally it's an issue of improper cleaning of the filter and application of the oil.

daveak05

I tend to disagree about an oil treated air filter and it's effect on the MAF.

Bob W. - undead

don't they claim it filters *better* than paper element filters?

daveak05

but, you can't have it both ways. If it allows more air flow, it typically will trap less particles.

Their big claim to offset this notion is that their filtering element is highly advanced...which I find highly doubtful.

JohnLZ7W

Sure you can have it both ways if the new filter has more surface area