Hey folks, I just wanted to show what we've been working on for the 955 and 957 Cayenne models (2004-2010).

We are often asked for exhaust options for the Cayenne, and often times we are asked for a "sporty" solution that is not too loud. Usually owners also want to reduce the back pressure somewhat, especially on Turbo models.

Removing the OEM secondary catalytic converters seems to be the key to achieving both of these goals at a reasonable price. The primary cats are efficient enough to keep the emissions levels very low on these vehicles, and the horsepower benefits are significant.

Here's the OEM secondary cats, removed from a 2009 Cayenne Turbo:


And the honeycomb guts of the cat, where the exhaust restriction occurs:


The simplest approach was to replace these secondary cats with straight pipes. Using stainless steel and a CNC mandrel tube bender, we created a single-piece, high-flow tube to take its place. We created an analog to the OEM system that still uses OEM-sized diameter tubing and a factory fit flange for installation.



We also made an extra effort to use the OEM catalyst mounts by designing compatible hangers.


We have found that when bypassing these catalytic converters, a lack of OEM-positioned hangers can lead to vibration, rattling, contact with chassis, and extra stress on the primary cats in front of the system. It can also cause the muffler and pipes at the rear of the car to rattle. In other words, these hangers are critical to the entire exhaust system's operation.

Weighing the OEM system:



Total weight: 28.46 lbs.

Weighing the Shark Werks Cayenne bypass system:



Total weight: 10.38 lbs.

A side benefit is the weight savings of around 18 lbs.

The system also includes OEM Porsche exhaust gaskets to replace on the vehicle. The typical installation time is between 1.5 to 2-hours. This is the one of the easiest ways to make a Cayenne, S, or Turbo model sound a bit sportier while adding some horsepower.

Summary:
- Increased horsepower and better throttle response
- Sporty, more aggressive sounding exhaust
- Reduced turbo lag on "Turbo" and "Turbo S" models
- Weight savings of around 18 lbs (10 lbs, versus 28 lbs with OEM system)
- No "Check Engine" lights

For more check out our product page:
http://www.sharkwerks.com/products.php?pid=270

And if you have any questions just Email me to alex@sharkwerks.com

 

Very nice.. Weight Savings never hurts no matter the vehicle.. Ill add these to the lineup and offer them to our customers.. Nice work again!!!

 

Cheers man and yes the weight thing lol!! Will have some videos and stuff shortly

 

This looks great! What do you expect the hp gain to be ? Any dyno tests ?

 

Will post that stuff shortly and typically on stuff like this in the past we've seen about 15-20hp or so

 

If these fit the Cayenne S can I assume it would also fit Touareg V8?

 

GEEZ cant anyone sell these for around $200?!? Outsource to China or something and get a better rate!! I understand that designing costs money but there are other companies out there with the same design so its ridiculous that you can't just replicate theirs for cheap. Its just a piece of pipe C'Mon!!!!!

 

Yes sir that's supposed to be true although I haven't done any testing on the Touareg before.
I wish I could too... I understand where you're coming from and part of the reason for even doing them was out frustration that the $600 ones didn't have hangers like the factory ones. There's actually however quite a bit more too it than you're assuming... it might well seem like just two pipes but there's actually a good bit more to it than that. There's other costs such as prototyping, flanges, welding, mandrel bending, equipment, new hardware, gaskets, shipping supplies, testing etc... Nobody sells the exact pipes you need... The two pipes aren't the same either. I can promise you that if you did go to a place and try to make your own you'd be surprised at how much it actually ends up being. We're not exactly making a significant margin or anything. The main reason was indeed to have hangers which you'll see are on the stock ones that you remove. They're very much integral to holding the entire exhaust in place. For sure if you do have the time take yours off and see how much it'd be because I'm guessing you'll be surprised . You might actually find it cheaper/easier to gut your secondary cats if you wan to try something like that.

 

+1 for adding the hangers! the other ones are horrible for rattle noise.

 

nice work, pretty impresive...

 

Very nice. I wish I didn't already have the FVD ones.

The addition of the hangers is great. And no need for the polishing.

Bypass pipes made my turbo sound just sporty enough without being obnoxious.

 

I like this description. Exactly what I want. What some people choose to make their cars sound like blows me away, especially luxury cars.

 

This is a quality system especially with the hangers which is an absolute must. The cost is what it is and it seems mandel bent pipes with the proper hardware for any Porsche is expensive. For the amount of pipes Sharkwerks will sell no matter what the price is they have to justify this. No matter the price..compared to the amount of Cayenne's sold they will sell a small fraction of these pipes. So I look at this as more of a highly custom type of deal.
If I was going to keep my 09 Cayenne S longer than a year from now I'd have these pipes on it in a heartbeat.

 

hurry up and make one for my 2011 Turbo!!

 

Roger that and we also took extra time to redesign the way the hangers get installed. The factory ones are a PIA to remove/re-install. These ones have screws/hardware that make for a much easier install

Thank you. Been a pet peeve project of Dan/James/myself for quite a long time. We just didn't get to it till now

Cheers and I like the sound too. Just right. I have to say these plus an exhaust and you're getting to be way too loud at that point

Thanks PianoProdigy and I agree it's a nice/mild upgrade. When you get on it, the sound is amped up but when you're cruising around people won't/don't need to hear ya either:P

Thanks mdrums, you know where we're coming from! We're not making 1000s of these and just homemade and keeping is US/small scale:P They actually sound pretty neat on the S models (no hair dryers hehe)

Hehe I hear ya... When you head outta town for a party-week next time leave her here and we'll do some work:P