Muffler bypass

Could someone provide me some information in regards to muffler bypass for the 996? I can't seem to find past conversation in regards to this topic, thanks...

Are you talking about the Gundo hack conversion? If so do a search under that name and you should get all info

Porsche sport exhaust style ("PSE") aka Gundo hack modification V Or the "Fister style" mod V

Fortunately, when I bought my 996 it had the Gundo setup already. I'm talking about this: Porsche 996 Carrera with Fabspeed Muffler Bypass Pipe - YouTube

Unless you're trying to save the weight, you might also consider exhaust dumps/cutouts...

Not to concerned with weight, just want a deeper sounding note. The Gundo setup sounds nice upon acceleration.

I've been trying to unload a pair of bypass pipes for a while: Will sell for $75 plus shipping. Anyone man enough??? (I am not.) I had a local muffler shop do a Gundo hack on my mufflers a couple of months ago. These bypass pipes are definitely louder than the Gundo-hacked mufflers.

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This is really tempting but I want to be able to carry on a conversation on the speakerphone at the same time. Possible?

October 2014 I'm making the two-hour drive to Summit Point for a track weekend. My wife is riding with me. Had the bypass pipes on at the time. As we're approaching our hotel in Winchester, VA, Susan decides to order a pizza for us to pick up. She Googles some pizza shop and calls to place the order. She can't carry on a conversation as long as I am trying to maintain speed on the highway. I could more-or-less converse with Susan in the car, but depending on throttle position, maybe with raised voices. She wasn't thrilled with the sound, but she made the whole ride without complaint. She didn't stop me 15 minutes into the trip and tell me to take her back home. At the track various people said the car sounded great!

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Dammit. I commute from rural VA to DC and I'm on the highway long enough at 80mph that I often take client calls from in the car. Probably just too loud for that. I used to have an E24 M6 with a Triflo on it and every day driving to DC I would come into the E Street tunnel and then shriek through it in second gear. It made every.single.commute bearable

I got quoted $400 to do the Fister mod from (3) local exhaust shops.... At that point, I have just decided to pull the trigger on used Aftermarket mufflers.

You can get Fister to Fister your cans for $300...

I wear earplugs on long trips. I don't have to, but it makes riding with the windows down nice. I love them, and I have ones just like the ones Mark is trying to sell. For $75 you can just put your mufflers back on if you hate them.

here's my vid with my external mic setup: The mic is on the back glass near the rear wiper, hence you can hear lots of intake noises too.

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The shop that did mine charged me $100 and did a nice job of it. Now, I took the cans out of the car and brought them to the shop, so I guess that helped keep the cost down.

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That sounds familiar

Thanks again for everyone's input. Before owning my 996 I've owned 5 Mustang's, all of which had off-road exhaust set ups, so, I use to loud exhaust. I know the tone is much deeper from a V8 versus a V6 so, my question, is the note much higher pitch that it's kind of unbearable to listen too? One of my Mustangs Supercharged 1986 Mustang GT 5.0 Foxbody - YouTube

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Nice video. I wish we had AXs like that around here...ours tend to be random(i.e. hard to follow) cones scattered about a sea of asphalt. I toyed with the idea of bypass pipes for the 996 years ago but I figured why alert the cops to my presence any more than I have to. I'd like to hear the pipes on a 996/997 in person though...in all the years I have yet to hear them firsthand.

Different muffler brands will yield different "tone" and "timber" depending what sort of sound you want. The bypass pipes, besides increasing volume and loudness, sort of have their pitch dictated by the catalytic converters. Overall, 996's tend to have a lower pitch, but not as low as American v8's. I had a big block vette once that would rattle the house windows. The Fister, gundo, pse gives that nice brassy rattle and extra volume without drone or being loud all the time, but increase with the right foot. YouTube and manufacturer websites help, but nothing beats hearing them in person or getting help here. There are some brands that fly under the radar that offer unique tuning. Check these out: fabspeed, tubi, Mille miglia, M&M, dansk, kreissieg, etc... All seem to offer street to crazy loud to straight pipe systems, just depends on your ears and wallet. I went from stock to Mille Miglias to Tubis back to Mille Miglias. The milles are lower pitch and growl like a v8, whereas the Tubis are higher pitch and scream on the high end like the Italians, but not as loud as the Milles. Hope this helps

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Thanks you for the info..

I've just done my own bypass and it was really easy. I bought the pipes here: http://www.porscheshop.co.uk/ (I'm in the UK) and they took just half an hour to put on. My boxes were in good condition but it was still easier to remove them both complete with the 3-bolt plate that attaches them to the chassis rather than doing it the normal way and removing the two upright bolts. They just didn't seem to have enough room to remove them and the 3-bolt plate has easier access and was simple to do. The car is loud but its a gorgeous sound, particularly compared to the standard output which is quite poor imo. It's easy enough and cheap enough to do and put back if its too loud for you. Sadly they're too loud for my local track on track days as their limit is just a 100db (3 feet away at 2000rpm)

I would like to get these bypass pipes from you Mark Hubley

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I would like to try these.