997.2 DFI Carrera Performance Software (09-12) Electrical With the cat bypass pipes

With the cat bypass pipes installed

Any and all other brands of catalytic converters simply and quickly degrade

5mm quad-resonated X-Pipe and quad outlets

Sold as a set of 2

997.2 DFI Carrera Performance Software (09-12) Electrical With the cat bypass pipesThe 997. 2 Porsche Carrera Performance Software from Softronic works on the 2009 2012 911, all files are tested with 93oct and this software tuning results in these performance gains: Model Base BHP Base Torque Tuned BHP Tuned Torque 997. 2 3. 6 DFI 345 288 365 307 997. 2 3. 8 S DFI 385 310 410 333 997. 2 3. 8 X51 DFI 408 na 440+ na 997. 2 3. 8 X51 DFI Daytona Race Only 408 na 470+ na Options: Free revving in Neutral Left Foot Braking RPM increase in