TEGIWA 100 cel race downpipe. Our downpipe replaces the restrictive factory unit that comes fitted to the EP3 Type R. This optimises exhaust gases leaving the engine, as well as recuperating a few extra HP thanks to the lack of a catalytic converter. To fully optimise this we'd suggest having the car mapped to accommodate the less restrictive downpipe. The internal diameter is made to match that of our cat back exhaust system perfectly, 70mm OD, 66mm ID. This product comes complete with gaskets and fitting kit.