K&N filter

[esky365]

I fitted a K&N air filter to my 2000 1.9tdi A3 - it made a notable diference

I fitted a K&N air filter to my 2008 1.9tdi Caddy - it made minimal difference

I now own a 2005 1.9tdi A6 - any opinions on fitting a K&N filter to it?

They are not cheap.

[Rob69]

Don't bother imo !

[Gazwould]

It needs to be backed up by a dyno .

A 200 bhp 1.9 PD Passat took out it's stock panel air filter , it gained just 1 bhp .

[Chema.RB]

If you want to get more power from a diesel lump, you need more fuel, not more air.

[Rob69]

You'd probably be better spending some time cleaning the intake manifold and EGR, logging MAF and manifold pressure requested and actual to check turbo VNT function, and if needed, spend the K&N money on a new MAF sensor, especially if still running on original MAF with high mileage.

[Crasher]

That it made a big difference to the A3 is odd as it should not have. I still fit them to all my cars though, always have.

[Rob69]

Yours are petrol engines though?

That it made a big difference to the A3 is odd as it should not have. I still fit them to all my cars though, always have.

[Gazwould]

Egr deletes and decats FTW

[Crasher]

Yours are petrol engines though?

Yes, proper engines, not glorified farm tractor things

[Gazwould]

Gosh , alot of Audi tractors have won Le Mans .