I am turboing my 318is and obviously i'm gonna need bigger exhuast. I welded a pipe through my cat and painted the cat & that section of the pipe high temp flat black. You really can't look at the cat and tell that it has a pipe welded through it.
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Feeler: 318is "high flow" cat
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well i cut the cat off (flush to the side of the cat) and then i could take out the little piece of pipe that was left inside the cat. Then I slid a pipe through the cat and then tig welded it back together. it still mounts just like a stock one would.///Alpinweiß II 24v 91' 318is, Alpinweiß III 99' 323i, 04' Yamaha R6 SE for sale, 00' VW GTi, 83' El Camino BURNED, 01' P71sold, 92' Miatasold
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