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Porsche 991.1 Turbo GMG Racing WC-Sport Exhaust System
Handcrafted out of T304 Stainless steel and meticulously TIG welded to aerospace specifications with great precision, the system is lighter than the factory. Weighing in at 37 pounds, the GMG Porsche 991 Turbo exhaust system is 20 percent lighter than the factory system.
The system features high flow German made HJS HD 200 cell sport catalysts and a crossover x-pipe to increase power by balancing the exhaust gas pulse coming from the engine and adds to the signature sound that only the GMG WC system can offer.
The crossover x-pipe works by balancing the exhaust pulses from either side — or cylinder bank – of the engine. It allows the exhaust gases 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. The X-Pipe merges the exhaust into two uniform streams, allowing a smooth flow from engine to exhaust exit.
High quality stainless steel packing is used in the mufflers to withstand extreme exhaust temperatures and high intensity acoustic pressures that are generated by the forced induction system that is located within very close proximity due to its rear engine configuration. This is one of the key advantages of the GMG exhaust system since most other exhaust systems uses fiberglass packing instead to lower costs, and they are prone to rapid deterioration.
Using the factory bracket location, the exhaust system is a direct bolt on replacement for the factory system. To ensure no CEL (Check Engine Light) and proper operation of the vehicle, the HJS HD catalytic converters are OBD2 compliant and the O2 sensor bungs are placed at their proper locations.
There are three tip options. You can opt to reuse your factory tips for a stealth approach, or you can run our signature Quad-tips in either a brushed stainless finish or a heat-controlling black ceramic coating.
Features:
- Horsepower and torque increased up to 35hp without software upgrade
- Gains up to 90 hp with software upgrade on 91 octane over 100 hp with 100 octane fuel (pending development)
- Deep aggressive exhaust notes at lowers revs & exotic high pitched exhaust notes at higher revs
- German made HJS high-flow, 200 cell sport catalysts; OBD2 compliant, no CEL (Check Engine Light)
- Crossover X-Pipe to balance exhaust pulse
- Stainless steel packing used in mufflers
- No unwanted cabin drone
- Constructed out of US Made T304 Stainless steel
- Significant weight savings over the stock system.
- Direct bolt on replacement, All hardware and clamps included
- Requires no modification to vehicle
- Made right here in Southern California
Vehicle Fitment:
- 2013-2016 Porsche 991.1 911 Turbo / Turbo S
Returns Policy
Original sales receipt must accompany returns. We accept returns for exchange or refund 14 calendar days after delivery of the product. At our sole discretion after 14 calendar days, we will offer an exchange or store credit only. Items must be in "new, unaltered and unused condition". Definition of new, unaltered and unused condition is: without showing signs of wear or damage in any way within 14 calendar days of the delivery date (after 14 days no returns are allowed) must not be a special order or a custom order (such as custom optional color or other options made for your specific order, or long lead products such as supercharger kits, headers, Performance Packages, and similar products with lead times over one week) unless noted that it cannot be returned or has a different return policy time period other than that 14 days noted in that item's particular item description If an item is received damaged or is incorrectly shipped by us please contact Customer Support immediately. Items that are defective and shipped from us or items that you did not order but received from us will qualify for store credit or a cash refund. Any shipping damage must be documented with clear photos at the time of unpacking of the product and reported within 24 hours of receipt date and time. All product returns must be authorized prior to return shipping, and MUST have an return authorization (RMA) on the shipping label. Returns without an RMA will not be refunded. Please contact (215) 859-8424 or email info@forzamotorworks.com or return shipping authorization. Refunds are contingent upon inspection of item(s) once we receive it. There is a 15% restocking fee for returned items that are not damaged. Again, you MUST contact us within 14 days if you intend to return ANY item sent from our store. Items returned to us AFTER 14 days and WITHOUT contacting us, will NOT be refunded. Customer is responsible for all shipping costs if seller is not at fault..
Shipping
Shipping times may vary and often depend on the manufacturer. Many items carry a lead time and live inventory is only as good as the information that we are provided. Please reach out for an accurate shipping time and if you have any specific time constraints. Forza Motor Works cannot be held liable for the refusal of, delay of, loss of, theft, or damage to a shipment of any item. The customer agrees to indemnify Forza Motor Works for all costs, fees, and expenses Forza Motor Works incurs as a result of any violation of any local, State, Federal, National, or International laws or regulations. Packages shipped by Forza Motor Works are shipped without insurance or signature required. These extra services are available and can be purchased for an additional cost. Please contact info@forzamotorworks.com, or call (215) 859-8424 for more information. The customer agrees to take responsibility for lost packages that were not independently insured or sent without requiring a signature. The customer understands they will be liable in the event of additional fees, tariffs, or legal issues such as border seizure. The customer accepts these risks and agrees to release Forza Motor Works of all liability. Forza Motor Works reserves the right to charge a shipping and handling fee on every order being shipped from our facility. This fee is universal and applies to all retail and wholesale purchases and cannot be waived or credited. For retail deliveries within the USA, due to the tax nexus established by the South Dakota v. Wayfair Supreme Court decision, taxes will be calculated/collected for the delivery address of each order.
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