Wagner Tuning Subaru WRX STI 2007-2018 Downpipe with cat replacement pipeDownpipe Kit with 300CPSI Racing catalyst converter for Subaru WRX STI 2007 2018 made out of high quality stainless steel 1. 4301 (SS304) complete 76mm (3 " ) high quality 300CPSI Euro6 standard racing metal catalyst converter 100% perfect fit, plug and play less thermal load on the turbocharger more power by reducing back pressure significantly more torque optional with 76mm (3 " ) decat pipe

Designed not just as a repair solution but as an upgrade

the factory ring gear must be machined away from the factory differential

6 FSI – 2008 – 2014

Tested and Proven by CSF’s Global Network of R&D Partners

Directly designed for 1st step of BMW 35i engine modification

There is also an additional air scoop fitted to maximise frontal air flow to the core

AIRTEC's design features no step

The stock cooling system works okay on a stock car but once boost levels are increased and more heat is introduced it begins to struggle

The Ford part number for the plastic undertray fittings are as follows:

Contains 2x brake discs

Crimped with Gaskets

During a rolling road power sweep test with 27C ambient temps