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Hi-Flow cats?? Help!!

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Old 02-12-2012, 10:10 PM
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Hi-Flow cats?? Help!!

I was wondering how much louder will my truck get with High Flow cats? I have gibson duals now and it sounds good but I was a serious rumble even at idle. And which brand to get??
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Old 02-13-2012, 05:37 PM
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I bought a pair for my Mustang from Bear River Converters - Wholesale distributors of catalytic converters.

If your truck has 4 converters and you remove them and install 2 high flow units, it will be somewhat louder. If you replace all of the stock units with high flow units, it won't sound any different.
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Old 02-15-2012, 07:39 PM
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He is right. My truck came with 4 converters, and I replaced them with 2 high flow units, and it sounded a lot better, and that was with the stock exhaust it had on it at the time.
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