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The Tuning Source
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  • BASIC DIY PACKAGE

    BASIC DIY PACKAGE

    BASIC DIY PACKAGE

    Regular price From $1,295.00
    Regular price Sale price From $1,295.00
    Unit price /  per 
  • 2017-2023 L5P DIY PACKAGE

    2017-2023 L5P DIY PACKAGE

    2017-2023 L5P DIY PACKAGE

    Regular price From $2,150.00
    Regular price Sale price From $2,150.00
    Unit price /  per 
  • FLASHING DEVICES

    FLASHING DEVICES

    FLASHING DEVICES

    Regular price From $410.00
    Regular price Sale price From $410.00
    Unit price /  per 
  • MPVI3 Tune Files (2017-2019 Duramax L5P 6.6L)

    MPVI3 Tune Files (2017-2019 Duramax L5P 6.6L)

    MPVI3 Tune Files (2017-2019 Duramax L5P 6.6L)

    Regular price From $1,500.00
    Regular price Sale price From $1,500.00
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  • MPVI3 Tune Files (2020-2023 Duramax L5P 6.6L) Tuning

    MPVI3 Tune Files (2020-2023 Duramax L5P 6.6L) Tuning

    MPVI3 Tune Files (2020-2023 Duramax L5P 6.6L) Tuning

    Regular price From $1,500.00
    Regular price Sale price From $1,500.00
    Unit price /  per 
  • 5" Diesel Exhaust

    5" Diesel Exhaust

    5" Diesel Exhaust

    Regular price $735.00
    Regular price Sale price $735.00
    Unit price /  per 
  • Cat & DPF Race Pipes (2017-2023 GM 2500/3500 6.6L Duramax L5P)

    Cat & DPF Race Pipes (2017-2023 GM 2500/3500 6.6L Duramax L5P)

    Sale

    Cat & DPF Race Pipes (2017-2023 GM 2500/3500 6.6L Duramax L5P)

    Regular price $529.00
    Regular price $599.00 Sale price $529.00
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    Sale
  • 3.5" Downpipe (2017-2023 Duramax L5P)

    3.5" Downpipe (2017-2023 Duramax L5P)

    Sale

    3.5" Downpipe (2017-2023 Duramax L5P)

    Regular price $395.00
    Regular price $467.50 Sale price $395.00
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    Sale
  • EGR Upgrade Kit (2017-2019 Duramax 6.6L L5P)

    EGR Upgrade Kit (2017-2019 Duramax 6.6L L5P)

    Sale

    EGR Upgrade Kit (2017-2019 Duramax 6.6L L5P)

    Regular price $295.00
    Regular price $325.00 Sale price $295.00
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    Sale
  • EGR Upgrade Kit (2020-2023 Duramax 6.6L L5P)

    EGR Upgrade Kit (2020-2023 Duramax 6.6L L5P)

    Sale

    EGR Upgrade Kit (2020-2023 Duramax 6.6L L5P)

    Regular price $295.00
    Regular price $325.00 Sale price $295.00
    Unit price /  per 
    Sale
  • "CAN" Plugs (2017-2019 6.6L Duramax L5P)

    "CAN" Plugs (2017-2019 6.6L Duramax L5P)

    Sale

    "CAN" Plugs (2017-2019 6.6L Duramax L5P)

    Regular price $200.00
    Regular price $235.00 Sale price $200.00
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    Sale
  • "CAN" Plugs (2020-2023 6.6L Duramax L5P)

    "CAN" Plugs (2020-2023 6.6L Duramax L5P)

    Sale

    "CAN" Plugs (2020-2023 6.6L Duramax L5P)

    Regular price $255.00
    Regular price $295.00 Sale price $255.00
    Unit price /  per 
    Sale
  • Aluminized 4" Cat & DPF Race Pipes | GM 2500/3500 6.6L DURAMAX LML 2015.5-2016

    Aluminized 4" Cat & DPF Race Pipes | GM 2500/3500 6.6L DURAMAX LML 2015.5-2016

    Aluminized 4" Cat & DPF Race Pipes | GM 2500/3500 6.6L DURAMAX LML 2015.5-2016

    Regular price $395.00
    Regular price Sale price $395.00
    Unit price /  per 
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