Exhaust Question

I'm considering modding my exhaust - I currently have a stock system on my '04 C4S (with the 'quad' SS pipes). I live 1/2 mile from AWE and have always been confident with their work. Anyone have them install a system? Is is their custom system, Borla, other? I'd be looking for a system that has a throaty sound, preferably cat back, durable and good looking. Suggestions? Thanks!

I have B&B exhausts. They didn't do the install, but you would love the sound.

How many exhaust systems are there? I can think of: Borla, B&B, Fabspeed, Porsche Sport, what else?

We were just talking about exhaust systems at our weekly GTG and the one thing to look out for is unwanted resonance, particulary around 3000rpm (where you spend most of the time at cruising speed). I have the OEM PSE system and it sounds great with no unwanted resonance. I really like having the off switch to make it quieter when I need to run in stealth mode. Yes it's pricey, but well worth it IMHO since it's designed, engineered and backed by Porsche. Try to listen/drive to as many systems as possible.

I emailed Mike at AWE to see what they carry. AWE does develop custom systems as well. Phil

Also Tubi. Loved mine. It will be up for sale soon as the car is gone.

Are you coming to the next DC meet? I need to hear how Tubis sound.

I might make it; however, the exhaust is not installed as my car is gone. The Tubi has a very mild sound at idle, not much different than stock. When you get on it it comes to life. It was the perfect exhaust for me, not to loud with the top down (the wife would drive/ride in it) but loud enough that the wife hated it. I would recommend the Tubi, only complaint is the cost.

This link may help: Exhaust sound clips (PSE, Fabspeed, B&B, GHL, Ruf, and more)

Looks like many of the links have expired. Here's the B&B http://www.bbexhaust.com/car/996/ The exhause sound is linked on the right of the page. The sound is pretty close to the one mine makes.

Mod Exhaust This is my next Mod

I have a 2005 muffler by Europipe for my 996. You can see and hear a video at: www.europipe.be/1024.html Sounds great and has very nice metalwork. I'll be selling it as soon as I get my new engine in, since I'll be replacing the muffler and getting a 997s Europipe system. The 2005 muffler took about 1,000 miles to break in, then came the not to loud, but nice low rumble and smooth upper sound with no in car resonance. I definately am buying Europipe again. Made in Belgium by Stef and Herman Tourne'.

My problem with the sound clips is they never have an in car clip while cruising at around 2k-3k rpms which is the cruising rpm on the HWY.

Phil the best thing to do is to hear different types of exhuast in person to make up your mind. Sound is dependent on your taste. If your look for HP there is not much to be found, 5HP at best. I would not get a custom built exhaust as the price would be very expensive and you'll probably won't get any real HP from it nor that much better sound. It up to your taste and how much are you willing to spend.

Links have been fixed.

Evan - If you do the stock mufflers to "PSE" mod, use some '02 + mufflers because I have read that they sould much better. I did the '99 -'01 mufflers, and while it is better than stock, it is not as loud or as throaty as I had hoped. I have not heard the modded '02+ "cans" in person, but I am thinking of doing that or just getting true PSE. If you decide to do the mod, I would love to hear some before and after clips if you can arrange that. Thanks!

Phil- Thanks for the email. Check your inbox. Regards, Mike

Guys, I have a 3.4L engine and I got some 3.6L (2003) cans and modded them with as I've said here (post#9) How is it ? Its awesome !!! I didn't expect them to be that good, but its quite close (and close as an "in-car" to PC-headphones can be) to the PSE clip out here . Its not loud as bypass pipes nor is there any resonance (I have a stock air box and intake- FYI). The throatiness is at the perfect levels - almost better than the PSE I'd believe (why? See that version of the PSE, like I modded goes on a 3.6L engine - I put mine on a 3.4L engine). I'd highly recommend this mod but just get it some from a shop that knows how to create custom exhausts - you don't want a leak from a poor job to burn something inside your car as the burning hot gases escape from such a hole !!

do you have pics of that mod? My trying to understand the 2nd intake part...

Evan - Here are some pics of both stock and modified mufflers. The first two pics show the "modded" muffler on the left, which is a 3.4L engine muffler for '99 - '01. The muffler on the right is my '04 stock muffler for the 3.6L engine ('02 - '04). This is how can you tell the difference between the 3.4L muffler and the 3.6L muffler. The 3.4L muffler has a straight pipe that connects to the cats, while the 3.6L muffler has the "accordion" like pipe that attaches to the cat. The 3rd pic shows real PSE mufflers. BTW - earlier today I got the chance to here REAL PSE mufflers for the first time in person and they sounded SWEEEEET!

Evan - did these pics help you understand the "mod" better? Let me know if you have any quesitions.

Yes, Thanks It was hard to understand why a muffler would have 2 intakes and only 1 outlet; having the gases go back through the process agian with the 2nd and 3rd chambers. I would have thought it would be the other way around. Being that you would want to expel the gases as quickly as possible (more flow).

Phil, my car was the prototype for their exhaust system. PM me for more info or to hear/check it out in person. I'm not too far from you - Hatboro, PA Steve

Mitty's links for the Kreissieg Exhaust is AWSOME!!! It made me become a member. People who can find stuff like that, are friends of mine. My account is messed up for now. Will have pics and info when they fix my account. But hello to all for now. Jugger911

That Kreissieg exhaust IS awesome. I remember first hearing it a year ago when i was getting my pipes (Ruf). It's frightening close to F1 GP sound.