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i bought a tdi mk4 golf that an idiot had modified to be straight pipe all the way out, so i'm looking at needing to install a catalytic converter and muffler.
any recommendations for what type of cat works best with our engines?
Most other tdi forums are full of folks talking about cat deletes and mufflrectomies.... i know the ecomodder crowd is into efficiency, so i hope someone is still monitoring this old thread and has some bright ideas about the best cat for an mk4 tai.
thanks!
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