Hey guys,
We have had a lot of great feedback on our GT3 product line, especially our bypass exhaust systems which many of you are currently running.

One request we've had from several GT3 owners was for a product similar to the Cup car exhaust, something that outflows the existing options and weighs considerably less than stock.

We've hinted at this a few times and leaked some details, but now it's official:
The Shark Werks 997 GT3 Track Exhaust



The SharkWerks GT3 Track Exhaust system, which has been designed, developed and tested on our 2007 997 GT3RS (ZKERMIT) and 2010 997 GT3 shop cars, dramatically reduces the weight in the rear by 57 pounds. Utilizing two lightweight stainless steel race mufflers (each weighing two pounds) and three inch stainless steel piping, the entire system weighs eleven pounds and looks much akin to a Cup car set up. Installation is made easy via the use of stainless steel CNC'd flanges. Factory clamps and ceramic seals are retained for an OEM seal at the header/catalyst junction.

Here's a video we put together showing the product, installation and dyno tuning:
http://www.youtube.com/watch?v=15SD8XYFX2Q

Features
- Cup car derived, VERY aggressive sporty sound (see videos)
- Real 57 pound weight savings from the rear of the car
- Aggressive slash-cut 3" tips
- 18 gauge T304 tungsten inert gas welded stainless steel
- Designed in-house and manufactured in the US
- Does not interfere with emissions and 50 state legal
- Factory headers and catalysts retained (no Check Engine Lights)
- Direct bolt-on replacing factory center and side mufflers
- Fits the 2007-2008 997 GT3/GT3RS & 2010 Model GT3s

Dyno Chart


Top to bottom shown are:
-EVOMSit Software with SharkWerks Track Exhaust
-EVOMSit Software only
-Factory stock 2010 GT3

The tuning involves a more aggressive fuel map, timing advance optimization for specific grades of fuel, and a more responsive accelerator pedal.

Summary
With software only, the 2010 GT3 went from 392 RWHP to 404 RWHP at the peak. The car gained about this much horsepower for most of its RPM range.

The car gained over 10 ft-lb of torque at its peak around 6600 RPM and more torque throughout the RPM range.

With the exhaust and software, the gains were higher, bringing it up to 414 RWHP at the peak (22 RWHP net gain), more torque at the peak, and a large gain in torque between 3700 and 5400 RPMs. There is a small drop off in torque below 3400 RPMs which is outside the typical driving range on the track

Here's a video made by our friends at AWD Motorsports in Florida, who did prototype testing of this product as well:
http://www.youtube.com/watch?v=D99V0cS_VaI

If you happen to be from Florida they can demo and install the part for you as well.

Earplugs Not Included

This product is very loud and not wife approved. If you want a more street-friendly exhaust, please consider our bypass exhaust instead.

There is considerable interior noise under acceleration with the Track Exhaust. This is not something we would recommend installing on a street car. It is significantly louder than the factory exhaust or the SharkWerks 997 GT3 Bypass Exhaust System. Please be aware of how loud this system is and try to avoid public roads with traffic. There is a "safe" range for cruising at about 70-75 MPH by keeping the car in 6th gear in the 3000 RPM range that can be used to transport the car to and from a track.



My Opinion
I've driven several hundred miles with GT3 and GT3 RS models using this exhaust system now, and I am pretty excited about what it offers. While it's not something I'd want to commute with , it has a unique and exotic tone, and is much more tolerable than the straight pipe-options I had heard in the past.

Having been both a passenger and in the car following another running this exhaust, I believe it's not as loud as some of the other traffic on the road. It's louder than almost any cars, but quieter than some motorcycles and V8-domestic muscle cars you may hear. Still, it will put you in the top 1% of loud vehicles on the road and would certainly not be something you could sneak around town in without gathering attention. And this is why we call it a Track Exhaust.

Please email myself alex@sharkwerks.com or Dan dan@sharkwerks.com with questions or for more information. We have five units ready to ship today.