The new 991 GT3 is an amazing super car of its own right, however it is lacking that rumble we have grown to expect from a Porsche Supercar. Although the "exhaust notes" are somewhat reminiscent of GT3's from previous generations, the stock sounds emitting from this 9,000 RPM 3.8L flat-6 power plant were soft and "muddy." This is where we set out to create an exhaust system to change all of that.
The
new 991 GT3 is an amazing super car of its own right, however it is
lacking that rumble we have grown to expect from a Porsche Supercar.
Although the "exhaust notes" are somewhat reminiscent of GT3's
from previous generations, the stock sounds emitting from this 9,000 RPM
3.8L flat-6 power plant were soft and "muddy." This is where we set out
to create an exhaust system to change all of that.
Our
goals were simple, however the path to get there was tedious.
Re-engineering the the OEM bypass controlled exhaust took careful
design, craftsmanship and perseverance in order to produce something
worthy of this super car. We chose to retain the use of an exhaust
bypass valve controlled system and incorporated German made 70mm
Pierburg bypass valves (OEM is 63.5mm) which are controlled with the
sport exhaust button like the OEM system. By utilizing the exhaust
bypass valves, we can retain the sport exhaust controlled switch
function and preserve a quieter exhaust note during cruising speeds for a
virtually unchanged interior cabin sound when compared to the stock
exhaust. When a more aggressive sport exhaust sound is desired, pressing
the sport exhaust button on the center console opens the larger 70mm
exhaust valves and allows the engine to "sing" with melodic exhaust
notes one would expect to hear from a 9,000 RPM flat-6 Porsche GT3.
Increased power, intoxicating sound, and substantial weight savings
equals the perfect combination for ultimate performance without
compromise... PERFORMANCE EVOLVED
Unsurpassed Quality, Fitment & Performance... Made in Arizona.
When we set out to build the finest header system for the Porsche 991
GT3 we had a monumental task in order to create something better than
what Porsche developed. We determined the shortcomings of the OEM system
and made significant improvements to the exhaust flow characteristics.
Our design helps equalize each cylinder's exhaust pulses for better
exhaust scavenging and consistent exhaust temperatures. Additionally we
paid close attention to the exhaust flow into the catalyst which as
recently become a problem with the OEM headers. The flow of the factory
exhaust manifolds into the catalyst as caused excessive heat which
causes this premature catalyst failure and cracking of the factory
header before the catalyst. These issues have been corrected in our
header design which helps reduce exhaust restriction and temperatures
for increased overall power while improving the header integrity.
EVOMS ClubSport Exhaust Features:
Weight Comparison:
EVOMS ClubSport Header Features:
Power Gains of EVOMS Complete Exhaust System: