Shark Werks Sport Exhaust - Porsche 911 997.2 Carrera / S / 4 / 4S / GTS 09-12

Description

** This system will only fit 2009 / 2010 / 2011 / 2012 Carrera / Carrera S models. It is also compatible with the PSE (Porsche Sport Exhaust) equipped cars and continues to work with the sport button

Fits:
- 2009 Carrera / Carrera S / Carrera 4S / Carrera 4
- 2010 Carrera / Carrera S / Carrera 4S / Carrera 4
- 2011 Carrera / Carrera S / Carrera 4S / Carrera 4 / GTS
- 2012 Carrera / Carrera S / Carrera 4S / Carrera 4 / GTS

Compatible with:
- PDK and 6 speed transmission
- Porsche Sport Exhaust (PSE)

The new Shark Werks 997.2 muffler bypass system has been methodically designed, tested and proven on our own 2009 997.2 S PDK car during the first few months of ownership. Whilst we were excited to own and drive the new generation of 997, one of the areas we felt needed more attention was the exhaust note. In stock form the sound was extremely quiet inside and out. The goal with our center exhaust replacement was to achieve a PSE-like sporty Porsche sound that we all know and love and yet retain factory fitment and be 50-state emissions legal.

Designed in-house and manufactured in Northern California, the muffler bypass utilizes high-grade 18 gauge T304 tungsten inert gas welded stainless steel. The center replacement improves upon the factory unit by eliminating the sharp and tight left/right u-bends in favor of a straighter flow for a real world 12HP and 14TQ gain (see dyno plot below). Retaining the side mufflers maintains an appropriate sound level for daily driving (especially in a PDK car which is subject to droning). There is no additional drone or resonance. Should you ever want an even more aggressive sound you can also combine our bypass with aftermarket mufflers designed for the factory center section (e.g. Cargraphic).

Features:
- Improved, more aggressive sporty sound (see video below)
- Simple installation with no bumper removal required
- Does not interfere with SMOG emissions and 50 state emissions compliant
- 9 pound weight saving on the rear
- Direct bolt-on replacing factory center muffler
- Includes installation hardware and instructions
- Compatible with either the stock or aftermarket tips
- 18 gauge T304 tungsten inert gas welded stainless steel
- Designed in-house and manufactured in Northern California

This product also includes two new OEM exhaust gaskets and 6x replacement exhaust bolts to be used optionally if you would like to replace the old exhaust studs on the flanges. We also include four new bolts and nuts for replacing on the sleeve clamps, allowing you to replace these which are commonly rusted.

Note: Some cars with higher mileage may experience a slight increase in vibration when idling at a stop in Drive mode. These vibrations usually occur due to build-up of oil in the throttle body, which can be alleviated by cleaning the throttle plate and bore. Additionally we have seen instances where the OEM (Bosch) Throttle Body has a defective bore/plate and with a little wobble or play in the throttle body, needs to be replaced after as a little as 15k miles. Inspect this carefully if you notice any vibration on these models. Most 997.2 cars with 30,000+ miles should have this cleaned, as even a tiny amount of build-up can effect the idle speed. We also recommend changing the spark plugs at the same time, which can make a significant difference in how smooth the car runs at idle. We have also noticed that the engine will run smoothest in Sport or Sport Plus mode due to the increased idle speed.