JB+ Tuner for Mercedes-Benz 2011-2017 W204 SLK 250, C250 and E250 audi Our 300 CPSI race catalysts

Our 300 CPSI race catalysts replace the factory secondary catalysts and gasoline particulate filters providing a much more efficient flow for the exiting exhaust gases

Increases power and throttle response by maximizing exhaust flow

DELETED or Butchered catalytic converters then do yourself a favor and UPGRADE your car with a set of Fabspeed HJS German high-flow trimetallic OBD2 European Certified Homologated catalytic converters

Constructed from high quality 14-16ga CNC mandrel-bent T304 stainless steel for maximum performance and durability

JB+ Tuner for Mercedes-Benz 2011-2017 W204 SLK 250, C250 and E250 audi Our 300 CPSI race catalystsInstantaneous increase in Power and Torque! Take your gasoline powered SLK 250, C250, and E250 to the next level with this simple plug and play tuner. Increases torque and power across the power band with the most noticeable increases coming at lower RPM and throttle positions where you really need them. In addition to adding power and torque it reduces turbo lag and improves throttle response. Gains are up to 20 hp to the wheels and 40 torque to the