k and n air filter

[car nut]

My thoughts are add the k&n Cold air is the best way to add horsepower. You will hear a slight difference in your motor . More air being sucked in I recommend there filter charger you will feel the difference in the seat of your pants. You may want to consider aftermarket exhaust for more horsepower .And a nice exhaust note from a catback system. Have fun!

[Klasse Act]

I added a drop in K&N into my g/f's Mazda 6 and its got over 15k on it and its a little dirty but I haven't taken it out to clean it yet. IMO a drop in K&N is for the person looking to reduce costs and get a very slight gain in performance, also if you happen to be one of those people who forget to replace their air filters, well, the K&N excels there as it can get real dirty and still do its job as its cotton gauze and special oil still breathe

If your lookin' to gain in performance, well, your going to need to check an Audi car forum and see what they have for it if K&N doesn't offer one. I've had the K&N typhoon on my last 2 Honda's and they've been great, no issues and the perf gain is right there! No loss in mileage, infact I'd say I gained a little bit as my mileage is above the sticker.

[mwoolfso]

I've read a lot about APR Tuning..... they seem reputable.

[yakky]

Any CAI that doesn't require a new tune for you car's computer isn't going to improve horsepower. They don't make your engine sound bigger either. They are a waste of money.

Exactly. I've never seen a single independent dyno sheet that show an HP advantage of a K&N air filter vs a CLEAN stock filter.

I've read countless threads where the oil caused issues with the MAF and other sensors.

That said, save the $60, and another $60 and go do a intro track day.

[stibuki]

Save your money as a drop in filter will do little or nothing. I've built more than a few Audi 2.7 Bi-Turbos in the past. Nothing with any real HP gains will be cheap for this car.

Some of the more popular mods for the 2.7T with the most bang for the buck are:

ECU Chip or a flash of ECU both are available.

Upgraded By Pass Valves (BPV) do not use vent to air as your asking for trouble.

Upgraded reinforced inlet hose.

Down pipes would be last on the list as it's quite costly and pain to install.

Check out these vendors of Audi performance parts.

AWE
APR
GIAC

Audi World is a also a good forum to start with.

[Lean69]

Absolutely! A simple filter swap will change the sound slightly and flow better. So a filter will help.

But a kit will increase the sound, hp, and performance.

And I have usually got a little better gas mileage as well.

Correct, however the differences are so minor its barely noticible. If you want it for sound and or power, dont even bother. If you want it for durability, and ability to wash instead of constantly replacing go for it.

FYI reseach how it works with your car, for example on my Motorcycle aftermarket filters DECREASED power.

[pdhenderson]

just do a Colorado outlaw box /Swiss cheese
drop the filter in, the car is already a cold air unit.
you just want more flow, you do not need the new filter

[Detail-Impressions]

Be very careful changing the air filter in Adui or Volkswagen. The stock filter is better than any replacement filter.
If your looking to tune HPA is the best, second Unitronics.