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89 truck exhaust/cat
ok just got a 40 series flowmaster put on and i replaced the cat with a straight pipe and it seems a bit sluggish on bottom end. Just wondering if removing the cat would do this or if its more from the muffler, or both. Also, anybody have any experiences with lower gas mileage after removing the cat? it made my exhaust about 10 times louder but i didnt think it would affect the mileage. just curious, thanks
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