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  1. C

    99 tahoe (classic body style) upgrades

    my tahoe needs help. i want to run a custom exhaust but the stock cats make it hard to get good performance. i can upgrade to high flow cats and run a custom made exhaust. flowmasters are fine but what about true duals out the back? i see everybody talking about the dual inlet single outlet...
  2. C

    99 tahoe (classic) upgrades

    my tahoe needs help. i want to run a custom exhaust but the stock cats make it hard to get good performance. i can upgrade to high flow cats and run a custom made exhaust. flowmasters are fine but what about true duals out the back? i see everybody talking about the dual inlet single outlet...
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