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99 tahoe exhaust/intake sugg

This is a discussion on 99 tahoe exhaust/intake sugg within the GM Trucks forums, part of the Vehicle Specific category; my gf just bought a 99 tahoe, looking to get more performance and better gas mileage out of the damn ...

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    Member MnLS1's Avatar
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    1999 SS

    99 tahoe exhaust/intake sugg

    my gf just bought a 99 tahoe, looking to get more performance and better gas mileage out of the damn thing, what should I do first? I was thinking dual exhaust, any suggestions?

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    Member squee's Avatar
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    Navy Blue Metallic
    2000 SS M6

    Headers, Power Programmer (only cause its not worth putting on the dyno and you can get em cheap), cat back, CAI for sure, and the throttle body spacers actually help a little.

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    Member MnLS1's Avatar
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    thanks, dont know if I'll get the headers though, im not that nice. lol

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    Member Nitrous's Avatar
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    97 GMC with 02 LS6 engine

    Dump the factory muffler and cats and get you a set of Dynomax unless single exhaust if you don't mind a little rumble and a Random Technology Cat or Cats. Get you a decent air filter / intake tube and then go with a custom MAF tune with a little tickling for gas mileage. The power programmer is ok but won't get you where you need to be with gas mileage. This is where I'd start unless you decide to be nice and add the headers. Which one?

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    Member squee's Avatar
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    Navy Blue Metallic
    2000 SS M6

    The Hypertech Power Programmer 3 actually added 2-3 mpg in town to my dads 2000 Tahoe Limited (old body style).

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    Member Nitrous's Avatar
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    97 GMC with 02 LS6 engine

    I've got a HPPIII with a custom burnt cartridge for my 97 and it helped a little with the L31 but it won't do the same for the LQ4 like a custon tune would.

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