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My name is Scott from Fabspeed Motorsport, we have designed a few different options that may interest you when it comes race exhaust for your GT3 RS. We have been lucky enough to have many 4.0L GT3/RSs as development cars which has led to the best on and off road performance products you can purchase for your GT P-Car.
If you are looking for something that you will primarily keep on the track and you aren’t concerned with emissions, our Long Tube Competition Race Header System will bring you the most HP/TQ gains while dropping the most amount of weight (+38WHP and +28TQ). What makes our Long Tube Headers unique from all other manufactures are the Burns Stainless collectors specifically designed for the 4.0L flat engine. The collectors were made with Burns stainless proprietary X-design parametric engine/exhaust design computer program to optimize flow and create maximum power gains. Burns Stainless has an unparalleled 30 years of proven performance in motorsport, adopted by NASCAR engine builders along with world championships in Indycar Racing, Formula Atlantic, ALMS, FIA-GT, and Grand Am.
In addition to our collectors, another distinguishing feature are the Helical Valves we use in our side muffler bypasses which retain the PES functionality of the OEM exhaust system while dropping around 30LBS from the rear of the vehicle. We chose to use Helical Valves for their unprecedented quality - which have been proven by many OEM manufacturers such as Porsche themselves, McLaren, Ferrari, Lamborghini, and many more. No stuck valves and no chattering!
Rear end of a 991.2 GT3 with our Long Tube Competition Race Header System
If you would like to retain the OEM headers/cats, we also offer Catback Competition Race X-Pipe for the 991.2 GT3 RS. It’s the ultimate lightweight cat-back exhaust system for the 991.2 GT3 / GT3 RS saves 54lbs (24kg) off the rear of the vehicle and is perfect for competitive track use, high performance drivers education events, or aggressive street sound. Check out the system on our website https://www.fabspeed.com/porsche-991...n-race-x-pipe/
Just look at all of the bulk you will be dropping. We also incorporated a center X-Pipe to 70mm outlets for optimized exhaust flow.
In addition to race exhaust products, we have more street friendly exhaust products along with high flow filters and ECU Tuning solutions. PM me anytime if you interested and I will take care of you. We want to get our Long Tubes on as many RS P-Cars as possible!
Sounds good, we offer a Side Muffler Bypass system constructed with 14-16ga T304 Stainless steel, and the industries highest quality Helical valves.
This system is exactly what you are looking for, cuts weight, increase in horsepower, but will not give you any emission issues. Check out the information on our website, plenty of great videos and information of this product! Feel free to reach out and PM me if their is anything I can do to help you out!!!
