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Effect of high flow inline catalytics

Discussion in 'E24 M6 (1987-1998)' started by BINGO, Dec 31, 2010.

    BINGO guest

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    A local BMW racing shop mentioned to me that using two high flow Cats instead of stock will add 10% HP or 30 HP. I believe the stock header, down tube split, two O2 sensors and two high flow inline cats.

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