DB9 Performance Air Filter
 

Im trying to decide if i should upgrade the factory aston air filter with a performance air filter from rsc. I wanted to see if anyone on here has made this upgrade and have noticed any gains.

I have RSC's and like them! If I was changing out factory ones during routine maintenance or had any doubts about there condition I would use performance filter's as replacements.

I'm running RSC filters on my DB9 as well. My original filters were very dirty (thank god not oily!!!) so I can feel a little bit of improvement with the RSC filters.

Where are the filters located? I just bought a pair myself and am trying to figure out if I need to remove the underpanel or go through the wheel arch.

Thanks in advance.

Hope attached doc helps. Take your time. Always be safe especially under you car!https://www.6speedonline.com/forums/...ine=1397826748

DB9 air filters
 

It is not necessary to remove the front undertray to change the DB9 air filters if you are prepared to drill a couple of 20mm holes in the undertray to allow access to the 2 screws hidden behind it. It will also be necessary to have a long flexidrive with an 8mm socket. There are 2 difficult screws on each air filter box. One can be accessed through the undertray louvres, but the front most one needs a new access hole in the tray. Once drilled any future filter replacements are dead easy unless you are a big fan of undertray removal.

You don't even need to drill holes, I accessed the screws with by removing only the wheel arch cover, I used only a 1/4 ratchet w/2-inch extension and a t25 torx, took 20 mins from start to finish !!