Happy911S

So Santa brought her a surprise! BMC air filters like the ones on the GT3RS. The only problem now is she thinks she is a GT3 - more sound and at least one more HP (per the Butt Dyno, of course)!


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STG

Have you driven with them yet? Can you tell any sound difference?

Have them sitting in a box myself ready for spring install.

titleistaddict87

Wow, didn't realize the whole rear bumper has to come off for this! Nice work!

BradB

Nice job! I've toyed with the idea of getting those. Can you describe specifically what kind of noise you get? And is it noticible around town cruising or only when you are really on the throttle? And I see that there is a lot of debris in the filter boxes, how many miles are on your car?

Happy911S

I only drove about 3-5 miles to check them out but the induction noise is a bit louder when you step on it -- no difference at low rpm.

Happy911S

Car turned 21K miles while I was test driving after the change. This is not a difficult thing to do. Removing the bumper requires you:

- Remove eight screws on bottom of bumper
- Remove three screws under each wheel. I did not remove the wheels but you do need to jack up so that the rear wheels drop down some.
- Remove four screws in the center (under the spoiler)
- Remove plastic tail light covers and remove two screws each side
- Remove the tail light and disconnect wiring connector and remove one screw underneath (one size larger T)
- Remove bumper cover by pulling each side out and then back
- Disconnect license plate light as you remove cover.
- Remove screws on air box and remove old filter, clear air box and replace with new filters.

That's it! Now I could do it in about an hour other than the time I took to clean everything underneath while I had the opportunity. Remember to reconnect the license plate light when you reinstall the bumper cover - ask me how I know!

Good luck!

titleistaddict87

Wow, as a hardcare DIY kinda guy I may try this to learn more about the car. While I'm there, anything else worth changing/looking at?

Happy911S

You may want to change the oil during this time as I think it will be easier with the bumper cover off. I had already changed my oil recently and before I decided to do this but it would have saved me some time to have done them together.

I was concerned removing the bumper cover but now I realize that it is no big deal.

Larry Cable

I was watching "How its made: 918 Spyder" and they use oiled cotton filters on that car too ... very cool!

jimbo1111

Nice job! Thanks for the tips on removing the bumper.

porsche42

Great job, not sure I would tackle that, how was it to align after removing it? More leaves in the intake than I would have thought.

Mlbraptor

Great job. Did you have help removing the bumper or were you able to pull it off and put back on by yourself ?

Happy911S

I had the same thoughts but it is not a big deal.

There was more trash in the intake than I thought and the filters were pretty dirty. I know that it was not time to change per the Porsche schedule but glad I did.

Happy911S

I did everything by myself and there is no need for help -- easy!

mtbscott

Congrats. I did the bumper removal myself for the 40K service and have helped another Houston local do his. I agree it looks much more complicated than it is.
Pro tip: have a variety of Torx tools available. I used sockets, t-handles, and a small multi tool to reach the various fasteners. There is a pictorial on the Fabspeed site that shows where all the fasteners are.