stock 987 exhaust sound modification
 

difficulty rating 1 to 10: 1.5

tools needed:
-13mm deep socket
-ratcheting wrench

for elimination of drone optional:
-air cut off wheel (recommended)
-dremel

Not sure if this mod has any performance gains but it sure does sound and feel like it. I was just curious after realizing TechART had a "sound box" muffler tip add-on for the stock exhaust system. They said it made the car sound more aggressive but were not sure about performance gains. Here is what I did:

No need to jack up the car just get your 13mm deep socket and wrench. See the cross over pipe over the tip.

http://i167.photobucket.com/albums/u...d/DSC03330.jpg

Loosen the two 13mm bolts.

http://i167.photobucket.com/albums/u...d/DSC03331.jpg

Once loose the sleeve can very easily slide over, slide it over now.

http://i167.photobucket.com/albums/u...d/DSC03327.jpg

You can see there is only a slight gap between the pipes.

http://i167.photobucket.com/albums/u...d/DSC03328.jpg

wpmjr cut the end of the pipe and it helped reduce drone. Here is an example of what he did. The red line shows where to cut.

http://www.caymanclub.net/gallery/fi...exhaustmod.JPG

It seems that there are slight differences in each exhaust or how they are fit because mine had a larger gap already. Another good idea would be to cut a triangle or U out so you can use the sleeve to adjust the sound by sliding it back and forth. Thats what I did here:

http://i167.photobucket.com/albums/u...d/DSC03375.jpg

You can see now it can control the sound better, it also eliminates drone.

http://i167.photobucket.com/albums/u...d/DSC03376.jpg

http://i167.photobucket.com/albums/u...d/DSC03377.jpg

Now tighten both bolts again, so they wont rattle or fall off. The sound is alot louder and deeper. It only takes 5min. These video clips kinda suck but its better than nothing.
Click below for stock video clip:
stock video by audis4ed - Photobucket

Click below for modified stock video clip:
modified stock exhaust video by audis4ed - Photobucket

I drove and checked it out on the ButtDyno and it certainly felt like it had more kick, probably not though. The sound is great too. Pretty cool and cheap mod if you wanna see how your car might sound with an aftermarket exhaust.

I did this to my Cayman about 6 months ago and love it! No need for exhaust if you ask me - everyone who rides in my car is like "man this thing sounds great!"

:)

We did this on ours too, it sounded great... but it wasn't enough for us...... so we ordered the Borla! Should be installed within the next 2 weeks... I'll do my best to post a clip.