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Porsche 991 Turbo S Upgrade Packages

GMG WCGT 991 Turbo Exhaust Installed

Redline Speed Worx (RSW) is proud to announce our new Performance Partnership with GMG Racing to provide the highest quality of Performance Packages for the Porsche 991 Turbo / Turbo S.

RSW 991 Turbo RS1/2 Packages Now Available.

Our Service Team at RSW along with our friends at GMG Racing have always loved modifying the Turbo S, and the 991 is no different. The car is beautiful off the line and has a 3.8tt ready to be unleashed. With the addition of the RSW RS2 Performance Package comprised of GMG WC-GT Exhaust System, GMG 991 Turbo Sport Headers, and GIAC Turbo / Turbo S ECU Tuning, we have given the car that extra kick and satisfaction that it deserves. It’s a very subtle addition, yet will reward you time and time again.

RSW's RS1/2 Performance Packages Start with ECU Tuning specific to the accompanying hardware upgrades.

GIAC Porsche 991 Turbo / Turbo S ECU Tuning

GIAC is proud to release GIAC engine software for 991 Turbo S applications. This OBDII port flashed software packs a punch with peak gains measured at 30 - 40 wheel horsepower and 25 -60 wheel torque. Drivability is designed to be as smooth as stock at idle and part load, but offer a big boost at full load. Software features include added boost, changes to fuel and timing, and higher torque limits. GIAC is the first tuner to offer 991 Turbo software as an OBDII port flash. 

Porsche 991 Turbo Dyno Graph

Software testing for this product was completed both locally and remotely using proprietary logging equipment engineered for comprehensive DME access and data acquisition. Product testing completed with the dyno was the first and most extensive stage of testing using 93+ octane fuel.

Performance gains displayed in the dyno plot were achieved with the GIAC software upgrade only. Additional power increases may be observed with additional performance hardware and/or higher octane fuel. 

Contact Us Now to Upgrade your Porsche 991 Turbo / Turbo S

RSW's 991 Turbo RS1 Performance Package Hardware Upgrade

GMG Racing 991 Turbo Exhaust System

The GMG Porsche 991 Turbo exhaust system increases overall performance, enhances the sound, and reduces weight. Handcrafted out of T304 Stainless steel and meticulously TIG welded to aerospace specifications with great precision, the system is lighter than the factory system and displays a level of quality that is unsurpassed. Weighing 37 pounds, the GMG exhaust system is 20 percent lighter than the factory system.

GMG WCGT 991 Turbo Exhaust Installed

The system features German made 200 cell sport catalysts that are OBD2 compliant with proper 02 sensor placement to ensure no CEL (Check Engine Light) and a crossover x-pipe to increase power by balancing exhaust gas pulse coming from the engine and adds to the signature sound that only the GMG system can offer.

GMG Racing 991 Turbo S Exhaust

The crossover x-pipe works by balancing the exhaust pulses from either side — or cylinder bank – of the engine. It allows the exhaust to flow down the path of least resistance while speeding up exhaust velocity. At lower revs, turbulence is formed as exhaust gases try to shuffle past a second column of gases coming from the other side. While always producing more power than the restrictive factory system, exhaust speed is increased as the engine revs increase. The X-Pipe merges the exhaust into two uniform streams, allowing a smooth flow from engine to exhaust exit.

GMG 991 WCGT Turbo Exhaust System Off Road Cats

Stainless steel packing is used in our mufflers to withstand extreme exhaust temperatures and high intensity acoustic pressures that are generated by the turbo system that is located within very close proximity. This is one of the key advantages of the GMG exhaust system since most other exhaust systems uses fiberglass packing instead to lower costs, which are prone to rapid deterioration. The exhaust system is a direct bolt on replacement for the factory system and includes all necessary hardware.

GMG Racing 991 Turbo Exhaust Tips

Technical Specifications - GMG WC GT 991 Turbo Exhaust System

  • Horsepower and torque increased up to 30hp without software upgrade
  • Deep aggressive exhaust notes at lowers revs & exotic high pitched exhaust notes at higher revs
  • Constructed out of US Made T304 stainless steel
  • Hand built in the USA
  • Meticulously TIG welded throughout to aerospace specifications
  • Each system is individually serialized with laser etched badge
  • Signature Brushed Finish and Quad tip design
  • Significant weight savings over the stock system
  • System Weight: 37 pounds- Propriety Crossover center section with X pipe design
  • OBD2 compliant German made 200 cell sport catalysts
  • No CEL (Check Engine Light)
  • Stainless steel muffler packing
  • Direct bolt on replacement with all hardware and clamps included

GMG Racing 991 Turbo WC GT Exhaust System Tips Options

Quad Tips

991 Turbo S Quad Tips


OEM Tips

GMG 991 Turbo Exhaust OEM Tips

GT2 Style Tips

GMG 991 Turbo GT2 Style Tips

Contact Us Now to Upgrade your Porsche 991 Turbo / Turbo S

RSW's RS2 991 Turbo / Turbo S Package includes Tubular Headers

GMG Racing 991 Turbo Sport Headers

The latest GMG Porsche 991 Turbo exhaust manifold system is handcrafted from the highest grade 321 stainless steel and features equal length tubing and large 3 into 1 merge collectors.The GMG system is designed to reduce exhaust back pressure and complements the 991 Turbo's capabilities with improved throttle response and an increase in power and torque output. Utilizing equal length tubing and large 3 into 1 merge collectors, smoother flow of exhaust gases is achieved.

GMG 991 Turbo Headers

GMG chose 321 stainless steel to build the 991 Turbo headers due to it's improved heat management properties over 304 stainless steel. For many high performance turbo applications, exhaust gas temperatures (EGT) can exceed 1400° F which is beyond the working temperatures of mild and 304 stainless steel. Because of its excellent resistance to fatigue and cracking at elevated temperatures, 321 stainless steel tubing is one of the most desirable materials for exhaust systems.

GMG Racing 991 Turbo S Headers

Stabilized with titanium, 321 is an excellent choice for most turbo applications due to the increased material strength at high temperatures. To prevent premature cracking or warping, the GMG manifolds utilize laser cut flanges and each side of the turbo flanges are meticulously TIG welded. Proper welding technique is very critical for turbo headers due to the high stresses they see when in use. 

GMG 991 Turbo Headers Installed

To reduce heat and to direct more exhaust energy to the turbochargers, thicker stainless tubing is used versus standard thin wall stainless. 321 stainless conducts less heat than mild steel, helping to reduce heat and to direct more exhaust energy to the turbos. The GMG Porsche 991 Turbo exhaust manifold system is designed to work with the factory turbochargers as a bolt-on replacement.

Technical Specifications - GMG 991 Turbo Sport Headers

  • Large primary runner with a 3 into 1 collector
  • Improve throttle response and reduce turbo lag
  • Increase horsepower and torque output
  • Smoother flow of exhaust gases into turbocharger
  • Reduced temperature
  • Laser cut flanges to ensure no warping
  • Meticulously TIG welded to exceptional strength and durability
  • Lightweight: 12lbs vs 18lbs OEM
  • Designed to work with factory turbochargers
  • Handcrafted in the USA

Contact the RSW Service Team today to discuss the RSW RS1/2 Performance Packages on your Porsche 991 Turbo / Turbo S


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