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PORSCHE 997 Carrera S 3.8i (355 Hp) '04 -> '08

aka: Performance sport exhaust for PORSCHE 911 997.1 Carrera S

Claimed data:
Horsepower 355 Hp at 6600 rev/min
Torque 400 Nm a 4600 rev/min
Actual data:
Horsepower 341,2 Hp a 6795 rev/min
Torque 383,5 Nm a 4645 rev/min.

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Manifold Right – Left 242201
Kat.Right+ Left 100CPSI 243402
Rear exh. Right- Left 243404 + 243434
Connecting pipe 243433
Endpipes Right – Left 243415 + 243535
Actual data:
Horsepower 364,6 Hp at 6685 rev/min
Torque 408,1 Nm at 4700 rev/min.

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Stock Vs Supersprint

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Supersprint has designed a new full exhaust system for the PORSCHE 997 Carrera S 3.8 using 304 stainless steel. This system will include headers with long individual runners, special HJS - Emitec metallic racing cats, and free-flow mufflers. As with all of the Supersprint performance exhausts, a substantial increase in torque throughout the powerband, as well a significant increase in peak horsepower is guaranteed. A tedious development and testing process, using Supersprints' own MAHA brake-type dyno, has led the R&D Team to determine the perfect pipe diameter, system layout and length of exhaust components. The Supersprint exhaust allows for a dramatic reduction in weight, while the design of the tail tips gives the 997 an outstanding, exclusive look. Mounting the Supersprint exhaust is a simple, bolt-on process. The overall reliability of the 997 engine remains untouched but surprisingly, the gas mileage improves under similar driving conditions. Without a doubt, the Supersprint exhaust is the most cost effective performance enhancing addition for the 997, up to date.

The Supersprint right and left side headers use 304 stainless, 45mm o.d., equal length primary tubes. The header length and layout provides optimum exhaust gas flow and head ports' scavenging. The Supersprint 3-1 collector design is perfectly balanced. On the contrary, the stock headers use unequal length runners and asymmetrical mergers. The Supersprint connecting pipes are oversized at 63.5mm o.d, versus the smallish 55mm found on the stock headers. This feature ensures the best gains in low-end torque and max Hp. The sturdy, stainless steel flanges found on the Supersprint headers are perfectly machine-ground for a positive, durable seal on the cylinder head and with the joint to the cats. They are designed and machined to match the stock gaskets with the utmost precision, which helps make the Supersprint system the best quality and the most reliable full performance exhaust in the business.
Metallic catalytic converterS

The Supersprint Metallic catalytic converters have been developed and tested with the specific purpose of greatly decreasing the exhaust gas backpressure at all rpm, while at the same time guaranteeing an ideal reduction of the emissions. The Oversize inlet and outlet pipes are 63.5mm o.d. (stock is 55mm). The HJS cats are made in Germany by Emitec, the established world leader in performance and racing catalytic converter technology. While the stock cat system uses extremely restrictive, 400cpsi beds, the Supersprint system uses 100cpsi metal beds. Actually the stock exhaust uses 4 cats, 2 cats on each side of the exhaust system, while Supersprint only uses 2 cats, one on each side. The cups of the Supersprint cats are made specific for the 997, and their angle, volume and shape all work together in order to provide the best exhaust gas flow. On the new 997, just like on the previous 996, the space available for the exhaust system in the engine compartment is extremely small and cramped. This situation can easily cause the exhaust system's flow rate to be seriously compromised if the pipe layout and the components connecting tubes are not properly designed. In this critical area Supersprint has placed a great deal of attention. The reduction in exhaust gas backpressure provided by the Supersprint exhaust at peak rpm (6600) is an astounding -40%. At most points throughout the rpm range, the decrease in backpressure is even higher.

Engine rpm Exhaust backpressure bar Decrease in backpressure Engine HP increase Engine torque increase Nm Difference %
2000 0.02 -50% +12.4 +43.5 +14.5%
3000 0.01 -70% +1.1 +2.5 +0.5%
4000 0.05 -60% +27.7 +48.5 +14.0%
5000 0.11 -45% +21.5 +30.2 +8.0%
6000 0.15 -50% +17.9 +21.0 +5.5%
6700 0.21 -40% +23.4 +24.6 +7.0%
7000 0.22 -37% +23.1 +23.1 +7.0%

As displayed in the above chart, the increase in Hp and torque is equally astounding. The high exhaust flow-rate also provides for lower operating temperatures of the engine when under a load for extended periods of time. This makes the performance output less susceptible to the "heat soak". The Supersprint cats, thanks to their premium coating process and perfect blend of the Platinum, Palladium and Rhodium metals, are entirely compatible with the stock, OBD II emission management system. The Oxygen sensors must be simply plugged into the ports of the Supersprint cats. Due to this, the CEL (Check Engine Light) will not appear on the dashboard, because the full Supersprint exhaust is in use.REAR MUFFLERS

The Supersprint rear mufflers use the Free-Flow design typical of all of the Supersprint systems. Contrary to the stock muffler system, this exclusive design not only gives the Supersprint exhaust the right sound but also ensures an effective reduction in backpressure. The Supersprint muffler cans use a combination of straight, inner perforated cores, and a Supersprint, proprietary design U-bend, also perforated along its whole surface. This exclusive design provides the right blend of exciting sound and optimum performance. The whole installation process is extremely straightforward, as the stock exhaust hangers and mounting hardware are used. The Supersprint rear muffler system is also compatible with the stock headers & cat system, and T.Ü.V. approved.

While the SS rear mufflers can be used in conjunction with the stock tips, Supersprint also offers the option of using its exclusive design tips, available in multiple styles.
- Oval tips 145x95mm
- Quad tips, round 80mm
- Quad tips, round 90mm
- Quad tips, oval 90x85mm
Regardless of the individual SS tip design, the final looks is totally exclusive. Furthermore, the finishing quality is second to none in regard to both the machining of the rolled ends and the chrome plating of the tips' surface.

With E.E.C. homologationWith E.E.C. homologation
Component E.E.C. homologation valid only when fitted to the specific Supersprint homologated rear exhaustComponent E.E.C. homologation valid only when fitted to the specific Supersprint homologated rear exhaust
Compatible with the OEM catalytic converterCompatible with the OEM catalytic converter
For racing use onlyFor racing use only
Discontinued Product. Available while stock lastsDiscontinued Product. Available while stock lasts
Threaded bung for oxygen sensor providedThreaded bung for oxygen sensor provided
Oval endpipeOval endpipe
Twin oval endpipeTwin oval endpipe
Flat oval endpipeFlat oval endpipe
With certificate of authenticity - Compliance to sound regulationsWith certificate of authenticity - Compliance to sound regulations
With certificate of conformity for classic exhaust designWith certificate of conformity for classic exhaust design - Internet Partner