Porsche Carrera 996 1999-2004 C2/C4 Muffler Bypass Kit +23 HP +45 Ft-Pds TorqueLooking for a very inexpensive way to add 23 Horsepower and 45 Ft Lbs. of Torque to your already high performance Porsche 996 Carrera 1999 2004 (non C4S or Turbo), not to mention a bad intention d growl that can be heard for blocks? Well, you've come to the right place. Here's the deal: Improves horsepower and torque by 23 whp and 45 ft lbs Saves over 35 lbs from the rear of the vehicle! Used by many Rolex Grand Am race teams as well as PCA POC and