Metal Matrix 100CPSI Direct Fit Cat Pipe Fluid Pressure Sensors Their inverted bullet-style tops make

Their inverted bullet-style tops make for more filter surface area

short-term lambda adjustment (ShortTermTrim)

along with a laser cut cast steel flange to ensure long lasting leak free reliability

This eliminates clutter within the engine bay while drawing cold air from outside

when the material is easier to machine)

Metal Matrix 100CPSI Direct Fit Cat Pipe Fluid Pressure Sensors Their inverted bullet-style tops makeThese are one of the best cats on the market for the CN9A CP9A Evo 4 6 models using the Invidia Front Pipe. Uses a 100CPSI catalyst and is rated to flow 680CFM. Meets ADR Emissions and is Euro 3 Compliant at time of testing.