Anyone ever modified the stock exhaust?

A few months ago I put on the PSE, and, for the most part, I'm very happy with it. It's only on those occasions when I hear a Fabspeed that I begin to get exhaust envy again. Rather than spend another $1000 or so again to swap exhausts, I was wondering if I could do anything with the stock mufflers I've got lying in the garage. I don't think they'd sell for much on ebay, so the only thing I could do with them is save them to put back on the car when I get rid of it, although if it goes to a private party they'll likely want the PSE. So, is there any way for a muffler shop to work some magic on the stock mufflers? Has anyone done this?

THis won't help but a few years ago there was a company or person that would gut your stock muffler and re-weld on an exchange basis. I don't know if it's even in the archives or whether anyone remembers, but it was before PSE and he basically was competing with Fabspeed. Someone may remember more.. <img border="0" title="" alt="[Frown]" src="frown.gif" />

By Design tinkers with the Turbo muffler, but I don't know if they do anything with the reg 996. Either way, it would be stupid because they charge $1400 for their OEM mod, and you can buy a new proper system for less than that. <img border="0" alt="[cheers]" title="" src="graemlins/beerchug.gif" />

Thanks for both of the replies. I certainly don't want to spend a lot of money. I was thinking more along the lines of heading down to the local muffler shop and having them gut it in an hour or two. Couple hundred bucks. I don't even think it would need to be a Porsche specialist.

I heard L.A.Porsche does a descent job of it for a few hundred $$ I'm getting the Fabspeed though.

I had my exhaust gutted. Was loud. What they do is cut open the exhaust and weld the in let and outlet pipe together, the stock ones are NOT joined. Very noticeable difference from stock. Especially at 5000rpm, noticeable surge in power.

If I understand it, in the stock exhaust, the air gets pushed into the muffler chambers, where it moves around and batters up against the walls and diffuses some energy, and then eventually exits out the outlet pipe? So what's the difference then between what you have done and the Fabspeed bypass pipes, beside the weight? Did you (RR) leave the exhaust on, or replace it with something else (quieter)? Thanks.

I took it off. It wasn't that it was too loud, I mean I like loud but it sounded to pipey and not deep enough for my tastes.

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica"> I had my exhaust gutted </font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">what's the difference between doing this and just getting a straight pipe? Are there glasspack fibers in the stock exhaust to make this one sound better than straight pipe?

One thing you have to be aware of, when modifying an exhaust in a N.A. engine, is the balance of proper backpressure and velocity loss. You can actually lose power in some instances of opening chambers or removing resonators in the exhaust body. An example would be, having a large chamber left by removing resonators, allowing a space for exhaust gasses to cool, decreasing velocity and creating stagnation. This in effect will hamper evacuation of gasses from the headers and cylinders in exhaust phase. Turbocharged exhaust are another story.