

PURCHASE DISCLAIMER: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable, or bypass emissions equipment on a motor vehicle in accordance with 40 CFR Section 86.1854.12(a)(3), Clean Air Act 40 CFR 1068.101(b). This includes software, known as tunes, that reprogram a motor vehicles electronic control module to alter engine performance and enable the removal of filters, catalysts, and other critical emissions controls.
These 991 Performance Sport Headers improve exhaust flow and sports car sound; Sport Headers include 200-cell HJS high flow catalytic converters.
SOUND:
These headers will give you a significant increase in volume, and a smooth sports car sound.
POWER:
These dyno designed headers feature smooth mandrel bends and a 3-1 collector to get the most power out of your 991. At 3000 RPM there we saw an increase of 15 whp and 27 ft/lbs of tq. Peak power was up 5 whp and 9 ft/lbs of tq.
FEATURES:
Why We Choose HJS Catalytic Converters:
HJS German imported catalytic converters are made from some of the highest grade materials you can find in a catalytic converter. This yields high performance gains and longevity so it wont deteriorate over time like lower grade catalytic converters. These catalytic converters flow up to 93-95% of a straight pipe in most applications. The benefit is that you get the "straight pipe sound" while still being able to provide enough emissions scrubbing to prevent a check engine light. If you'd like to learn more, watch our video about HJS catalytic converters.
Sport Catalytic Converter (STREET) - This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only. This product contains a High-Flow Sport Catalytic Converter solely intended for track and race cars as it is NOT California Air Resources Board Certified and not EPA certified. You are hereby informed and warned to check your local, state, and federals laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.
Very happy with the Sport Headers! I definitely feel the bump in WHP and that sound....oh, what a sound it now makes. Everyone was great at FabSpeed, especially Alec--who gave me suggestions and stayed away from high pressure tactics. Big recommendation from me!
I did feel a definite bump in performance. The car seemed to have gained about 400cc - around town it felt like a muscle car, seemingly very powerful at 3,000rpm and with the needle flying to redline more quickly than before. The headers led to a 14hp and 18ft/lb bump at peak, with the TQ peak coming in 350 rpm earlier, but the really remarkable thing is the difference in midrange - at 4,000rpm the difference is almost 50 ft/lb. This explains the car's turning into a city-street weapon! It feels like all of us who like to make our cars a little extra-special can take heart from the fact that there are businesses out there who value fast cars more than fast bucks. Pretty striking, and more than I dared hope would happen. I want to say a big thanks to all at Fabspeed.