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  1. B

    Engine Programmer

    What kind of performance gain could be achieved from a programmer under $300? MPG,HP,TQ,etc.
  2. B

    Engine Mods.

    Did you mean have someone, a professional, tune the engine for performance?
  3. B

    Engine Mods.

    Is the money spent on a new cam worth the results it will yield.
  4. B

    Engine Mods.

    What are the most cost effective modifications I could do to my engine to gain more hp/torque? It is a 5.3L, in a 2001 Yukon XL.
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