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sct x3

  1. SCT X3/General Tuning Questions

    F150 Ecoboost Accessories
    Tonight I took my truck to the tuner to have it programmed. I listed all the mods done: aFe cold air, MAK 3" downpipes, Heartthrob 4" cat back exhaust He asked what I gapped my plugs to, and I gave him a deer in the headlights look. He explained that I needed to install new plugs and widen...
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