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mileage/performance
I would like to know what is tried and true for these 3400's in the performance upgrade market. These sure are peppy little suckers!i'm thinking a pro-flow muff. since I had one on my last truck and sounded/performed well.and guys,what should I pay attention to regarding maintenence?other than the obvious. Thanks.
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01 Alero GL 3.4 no mods.
03 2500 cummins turbo diesel.to many mods to list.
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Linear Mode
