Titek Catless DP installed for....
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iTrader: (39)
Joined: Nov 2002
Posts: 6,453
From: San Jose
Car Info: Evo X, 04 STI, 335i, Fit
The Titek has a flat 3" flange so it doesn't mate up perfectly with the stock catbacks designed for a donut gasket. We can seal it up as best as we can, but if you are set on keeping the stock catback you probably want to take it to a muffler shop (that wont care about no cats) and get a flat flange welded on.
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