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Recomended Upgrades for a 2008 GMC Yukon Denali XL

Discussion in 'Performance & Fuel' started by Nate5452, Sep 16, 2009.

  1. Nate5452

    Nate5452 New Member


    New Here. I've read a lot about Cold Air Intakes and Upgraded exhausts, mixed reviews on both. I am considering the following:

    1. CAI
    2. Upgrade Chip/Program/Custom Tune

    Anyone here have a 2008 GMC XL that can shine some light on whether the upgrades were worth it.

    I will end up towing a 7,000 lb trailer sometime soon on occasion.

  2. Cowl327

    Cowl327 New Member

    I installed the vararam tri power on my fathers denali (6.2) and it made a huge power gain with a little tweaking from HPTuners.No dyno numbers but its faster...lol he can keep me in sight a little longer now!
    Last edited: Sep 16, 2009

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