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Type: Posts; User: 1955joker

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  1. Replies
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    Thanks It has stock manifolds on it and they ran...

    Thanks It has stock manifolds on it and they ran 2 1/2 inch pipes from the cats with long glass packs. I don't have a way to check a/f mixture or a good place around here I trust to do it other than...
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    Okay my question is I put true duels on my 08...

    Okay my question is I put true duels on my 08 Silverado from the cats back they used 2 1/2 pipes and nothing happened except it got louder no more power or fuel mileage. Should I have had them run a...
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    Duels On A 4.3

    I put true duels on my 08 Silverado with a 4.3 but it seemed not to do anything I thought it would. No more power and fuel mileage stayed the same. Should I put a H pipe in or anything else. I also...
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