Message: I'm adding the Hotchkis TVS set up to my '04 Dak with a 4.7 next week and I've got a MBRP exhaust system sitting in my garage waiting to be installed. My question is should I also add high flow cats or leave the stock ones. I remember reading somewhere that the '04 cats are as free flowing as after market high flows. Any truth to that? Thanks.
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Subject: High flow cats, '04 Dak