Our Porsche 991 turbo exhaust is a masterpiece of engineering, we are truly proud to be able to offer it to all of you lucky 991 owners. These Porsche flat-six’s are already amazing, with variable geometry turbos along with many other great features from the factory. It is a true performance racing engine, however the factory exhaust is very restrictive, killing all chances of true performance, and muting the sound of this engine to simply undesirable levels. This is an Twin turbo Porsche, and it should sound like it. Bullet performance’s 991 exhaust system offers an extremely high flowing design in comparison by removing the primary and secondary catalytic converters, while optimizing flow in all other areas, retaining a true 3 inch design throughout, unlike many of our competitors who use 2.5 or 2.75 inch tubing. The real secret of this system is our signature crossover “xpipe” with its incorporated swirling vortex chamber. It works so efficiently and sounds so good we were surprised ourselves during our prototyping stages! Power is completely maximized, and many of our customers argue it is hands down, the best sounding system available for this car. Our competitors simply do not think about flow the way we do; they often have very short and rough transitions, as well as lips and rough edges completely destroying any chance of high flow. With our exhaust all hangers and 02 sensors go to their factory locations, so you can guarantee this piece will fit like a stock replacement. With this system you will truly be able to feel the power gains. Turbo response is greatly improved as well as driveability, but you will be most impressed by the sound; you can really hear the amazing exotic sound of the engine, the same sound that Porsche should have offered in the first place.
More Sound. More Power. No Drone.Are you looking for more sound out of your 997/991 GT3 without sacrificing street drivability? Look no further than the TPC Racing Active Side Muffler Bypass pipe. It provides cup car sound and performance when you want it, while eliminating unwanted cabin drone and excessive noise in normal street conditions. All this while improving performance and handling.
How it worksUsing a factory-style actuator-controlled valve, the TPC Racing Active Side Muffler Bypass System provides cup car sound and performance in higher rpm/higher load ranges, while eliminating unwanted cabin drone and excessive noise. Its lightweight design saves 40 lbs from the OEM side mufflers, resulting in improved handling. Better exhaust flow management allows for increased torque between 2,600 and 5,600 rpm, as well as increased horsepower between 5-8,250 rpm.
Features• 40 lb. Weight Reduction from OEM • Factory-Style Actuator-Controlled valve • Metal Flex Joint for Easy Installation/Proper Fitment • Metal Flex Joint Reduces Chance of Center Muffler Fatigue • Machined/Fabricated In-House • Each Unit is Handmade in the USA • Stainless Steel Construction with Brush Finish
The TPC 950 turbo system is the ultimate in proven reliability upgrade for your Porsche 991/GT2 Porsche. Whats included 304 stainless headers w/CNC flanges and wastegate plumbing, Garrett G series turbos, Tial Wastegates, Complete oil / water hydraulic lines and fittings, CNC exhaust discharge adapters to allow use of original exhaust. The TPC 950 turbo system is designed to be used on a stock engine with no modifications. The TPC 950 Turbo system is tuned and designed exclusively to be used in conjunction with TPC intercooler system / Y pipe, TPC dual path GT2 exhaust and Cobb AP (NOT INCLUDED IN TURBO SYSTEM TO BE PURCHASED SEPARATELY) .Our TPC Turbo system has proven reliability in racing applications as used on our Optima Battery Search for the Ultimate Street Car GT2RSx and the OFFICIAL LAND SPEED RECORD for the 991 Turbo. The heart of the TPC 950 system is based on the latest in turbo technology featuring the new "G" series Garrett Turbo family. The new G series features the most modern turbine section allowing ridiculous performance with no compromise to the torque curve (Note the torque curve in the graph above) this is what wins races. The compressor section features a 54 mm inducer which allows 55 lb/hr @ 2.5 pressure ratio @ 72% eff . We have designed the system for use with the stock engine and have tuned the power band at modest manifold pressures not allowing torque to go over 600 ft/lb until after 4800 rpm peak torque is at 6400 rpm peake HP is at the last RPM site as per a proper race engine. Suggested options for the TPC 950 system is the Plex tuning boost controller, Dodson clutch, DSC Sport controller for added grip.
This turbo system comes complete with the following:
- 304 stainless headers w/CNC flanges and wastegate plumbing
- Garrett G series turbos,
- Tial Wastegates
- Complete oil / water hydraulic lines and fittings
- CNC exhaust discharge adapters to allow use of original exhaust
Suggested options for the TPC 950 system is the Plex tuning boost controller, Dodson clutch, DSC Sport controller for added grip.