The Competition Package for the Audi RS4 B5 consists of the Intercooler Upgrade Kit and the Downpipe Kit. Intercooler Upgrade Kit 200001139 The WAGNERTUNING Audi B5 RS4 Intercooler Kit is a high performance redesign of the stock mounted Audi intercooler and specifically designed for the B5 enthusiasts. Our engineers have increased the intercooler core size and efficiency, as well as improved the end tank design to remove any OEM bottlenecks, resulting in increased flow rating and charge cooling properties. Updated to the latest tube fin technology for the intercooler core, combined with cast aluminum and then CNC endtanks for reliable high performance air to air charge cooling. OEM+ Fit and finish for easy installation. The WAGNERTUNING Audi B5 RS4 intercooler kit features: latest tube fin technology intercooler cores 255mm x 265mm x 90mm exposed core dimensions CAD / FEM optimized cast aluminum end tanks 4-ply silicone hoses available in blue or black lightweight carbon composite intercooling ducts OEM Mounting Points 46% more intercooler face area vs. OEM 89% larger airflow vs. OEM new Bumper Intake Grills for high airflow, OEM fog light mounting simple Installation Downpipe Kit 500001001 76 mm diameter tubing SS304 stainless steel construction eliminates power robbing pre catalytic converters 100cpi racing main catalytic converters RS4 & RS6 turbo double flange Note:- These will require linkpipes fabricating to fit S4 and rear lambda cables extending (if fitted)