Modifying early 911 muffler, Opinions needed Options

[dion9146]

Hey guys, thought I'd ask the 914 crowd for an opinion....I know, that can be dangerous.

Check out this thread I started over on the bird board. I'm looking for a nice, lower rumble using a stock early 2 in, 1 out muffler. I do not want to modify it like the early 2 out sport style, Yes, that's too loud for what I'm looking for. I'd like to stop setting off car alarms in my client's parking garage.....

So before I start cutting, I wanted to get your opinions on what and how much I should cut. (IMG:style_emoticons/default/sawzall-smiley.gif)

http://forums.pelicanparts.com/porsche-911...ons-wanted.html

Thanks,

Dion

[Eric_Shea]

Here's mine:

(IMG:http://www.914world.com/bbs2/uploads/post-2-1103132975.jpg)

I followed the instructions for the sport pipe mod. I listened to a car with this muffler before I did and, it really wasn't loud from the outside unless he was getting on it. Very streetable so, I decided to plug the original exit wound.

Some things to note (as I can remember them):

1. It was a bitch to cut through the skin(s). Multiple layers of steel wrapping. Not what I would call entirely fun so... be aware of this. A cutting torch may be better (IMG:style_emoticons/default/confused24.gif) The only problem I see there is, it;s hard to get a clean edge with a torch.

2. I did finally use a cutting torch for those pieces on the inside that needed to be removed or opened up. I don't see any other way to get at them frankly, unless you're opening up the entire muffler.

3. I used 2" pipe. You're local Midas or Mineke probably has a metal scrap dumpster on premises. The pimply kid behind the counter thought it was a cool project so he gleefully ran out to the dumpster and grabbed me a couple 10" sections and handed them over gratus.

[dion9146]

3. I used 2" pipe. You're local Midas or Mineke probably has a metal scrap dumpster on premises. The pimply kid behind the counter thought it was a cool project so he gleefully ran out to the dumpster and grabbed me a couple 10" sections and handed them over gratus.

Eric,

Did you have any droning problems at speed on the highway? That seems to be the biggest complaint of the sport mufflers.