Invidia Lower Catted Downpipe with Twin 02 Bung for Subaru WRX/STI/Legacy GT (HS08SW1DOCB) 1442 they have also made them

they have also made them larger

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Invidia Lower Catted Downpipe with Twin 02 Bung for Subaru WRX/STI/Legacy GT (HS08SW1DOCB) 1442 they have also made themHere, you are looking at the Invidia Lower Downpipe. This is a catted downpipe that features a divorced wastegate flange and includes 2 O2 sensor bungs for your factory O2 setup, as well as an aftermarket wideband. This is a direct replacement for your factory restrictive downpipe designed to greatly reduce back pressure and turbulence. The result is improved horsepower and torque, along with reduced turbo lag for an improved throttle response.