Slip-On exhaust system for Porsche 911 Turbo (997)

Performance

Two turbo chargers, two air intercoolers considerably increase the weight of the Porsche 997 Turbo engine in comparison to the atmospheric model. The lighter exhaust system unburdens the rear end and centralizes the weight in a more balanced manner. The limit range of the vehicle adjusts upwards and so a higher transverse acceleration is possible. The combination of improved power to weight ratio (through an increased efficiency of 21 HP), torque progression by 35 Nm, and the positive effects in connection with driving dynamics enhance the performance of the Turbo distinctively. Furthermore, we thought it important to improve the sound. The turbines of the Turbo strongly absorb the sound of the engine, but we were able could compensate for it. We were able to add the otherwise quiet Turbo a sonorous and aggressive sound impression without disadvantages in the daily use.

Slip-On system (400 cpsi homologated):

• titanium link pipes with integrated 400 or 100 cpsi catalysts
• titanium end muffler
• titanium tail pipes

Hard facts (100 cpsi cat version):

• plus 21 HP (at 6.170 rpm)
• plus 35 Nm (at 3.990 rpm)
• minus 11 kg

Hard facts (400 cpsi cat version):

• plus 19 HP (at 6.070 rpm)
• plus 29 Nm (at 3.950 rpm)
• minus 11 kg

When installing an aftermarket Akrapovič Evolution exhaust system, which is developed for use on closed track, we recommend remapping of the ECU to prevent possible “engine check light” warning signal.