Choose your Tuning

The MPVI3 is the industry standard for tuning your 6.6L L5P. If you're looking for our recommendation for tuning your truck, this is it. 

Please be sure to input your VIN and Modifications at the bottom of the page so we can have the custom tuning written as soon as possible.

2020-2022 Duramax CCS MPVI3 Custom Tune Package (CCS-L5P)-Tuning-Coopers Custom Solutions-Dirty Diesel Customs

CSS Tuning Package

Package Includes:

  • HP Tuners MPVI3
  • 8 HP Tuners Credits
  • 5 Custom Tune Files
  • Canbus Harness (NOX Plugs)

  • Power Level:

    • Stock Delete
    • +45HP
    • +75HP
    • +90HP
    • +120HP

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    2020-2022 Duramax AMDP MPVI Custom Tune Package (2020+-AMDP-L5P)-Tuning-AMDP-Dirty Diesel Customs

    AMDP Tuning Package

    Unlock your L5P's true potential with AMDP Custom Tuning. These tune files will range from Stock Delete up to 150HP Race tunes.

    Package Includes:

    • HPTuners MPVI3
    • 8 Credits
    • 5 Custom Tune Files
    • Canbus Harness (NOX Plugs)


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    2020-2023 Duramax Pulsar V3 Tuning Module (22401)-Tuner-Edge Products-22401-Dirty Diesel Customs

    Edge Pulsar V3 Module

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    2020-2023 Duramax Pulsar V3/ w/ Insight CTS3 (22601-3)-Tuner-Edge Products-22601-3-Dirty Diesel Customs

    Edge Pulsar V3 w/ Insight

    Features:

    • Stock: 14.93 @ 92.32
    • Pulsar Level 5: 14.17 @ 98.44
    • Transmission Slip Protection (On/Off)
    • EGT Backdown Adjustment
    • Throttle Sensitivity Adjustment
    • Cold Engine Backdown Enable/Disable
    • Shift Backdown Enable/Disable
    • High Idle Adjustment 700-1500 RPM
    • On-The-Fly Adjustable Levels with the Touch of a Button
    • Full color, Capacity Touch Screen with Auto-Dimming
    • Offers Crystal Clear Data at Your Fingertips
    • Highly Customizable Gauges and Backgrounds
    • Boot Up Directly to Gauge Screen Upon Key Cycle
    • Read/Clear Trouble Codes
    • Full Data Monitoring
    • Data Logging
    • Expandable Accessory System
    • Wi-Fi Updateable

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    ECM Unlock Method

    You will need to unlock the ECM in order to apply custom tuning onto your L5P. 

    Note:

    These unlocked ECM's will not be able to communicate with the GM Factory Tools, GM will not be able to flash or modify your ECM for recalls anymore.

    2017-2022 Duramax E41 ECM Upgrade Kit (ECM-00-L5P-K)-Unlock Cable-HP Tuners-ECM-00-L5P-K-Dirty Diesel Customs

    HP Tuners E41 ECM Upgrade Kit

    • Allows you to remotely unlock your L5P E41 ECM, making the ECM ready to apply custom tuning. 
    • Eliminates the need of having to remove the ECM  
    • Enables read, write, & special functions in the VCM Suite software using and MPVI2+ (with Pro Feature Set or MPVI3 Interface

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    2020-2023 Duramax EVOHT2 w/ ECM/TCM Unlock Tool (26401)-Tuner-Edge Products-26401-Dirty Diesel Customs

    EVOHT2 w/ ECM & TCM Unlock Tool

    Allows you to flash your 2020-2022 L5P ECM without removing the ECM for an Unlock. 

    Features:

    • Allows in-vehicle unlocking of the ECM
    • No Cores to deal with
    • Saves the headache caused by swapping ECMs  

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    2017+ Duramax HP Tuners Modified E41 ECM (HP-L5P-E41-ECM)-ECM-HP Tuners-HP-L5P-E41-ECM-Dirty Diesel Customs

    HP Tuners Modified E41 ECM

    With this ECM you gain full access to calibrate, log, and scan via the OBD2 Port with your MPVI2 and VCM Suite 4.3+. 

    Features:

    • Gain the ability to tune your 6.6L L5P.
    • Allows full access to calibrate, log, and scan through the OBD2 Port Via an MPVI2 and VCM Suite 4.3+
    • VCM Scanner, dealer diagnostic and other diagnostic tools will continue to function normally.

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    Switches


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    2017-2021 Duramax 6 Position Switch (H-M04-00)-SOTF Switch-HP Tuners-H-M04-00-Dirty Diesel Customs

    SOTF Switch

    • 5’ OBDII pass-through cable
    • Knurled aluminum switch knob and position dial
    • Six-position rotary switch

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    Add EGR Delete

    When purchasing delete tunes, the new programming will automatically close the existing EGR valve to prevent any gasses from being recirculated. This means you don't need to fully delete your EGR in order to reap the benefits. However, with this option, you are relying on the OEM EGR valve to maintain a seal that can cause issues if it starts to leak.

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    2020-2023 Duramax EGR Solution Package (L5P-EGR-A045)-EGR Delete-Dirty Diesel Customs-L5P-EGR-A045-Dirty Diesel Customs

    2020+ Duramax EGR Delete

    Housekeeping

    Clears up room in your engine bay by fully removing the problematic EGR system, giving you that clean factory-look install that is topped off with our very own Dirty logo.

    Increased Performance

    Reduces carbon deposits in the intake which in turn decreases restriction, lowers EGT's, and gains a quicker turbine spool.

    Canadian Made

    Proudly made in Canada! 

    Long Lasting

    This kit has been made from CNC machined 6061 T6 Aluminum, T304 Stainless Steel, and then anodized to ensure long lasting quality.

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    These cannot be shipped to the USA.
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    Add 3.5" Downpipe

    We recommend adding the 3.5" L5P Downpipe to replace your crushed factory downpipe and DOC. It connects to your OE turbo outlet flange and mates with your OEM or aftermarket Race Exhaust System with a 4-bolt flange. Made of high polish stainless steel, It comes with a high-quality heat wrap kit. 

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    2017-2023 Duramax 3.5" L5P Downpipe (L5P-EXH-A004)-Downpipe-Dirty Diesel Customs-L5P-EXH-A004-Dirty Diesel Customs

    DDC 3.5" L5P Downpipe

    Features:

    • Pre-Built Heater Hose Assemblies w/ Quick Connect Fittings
    • Stainless Steel Y-Bridge Port Block Off Plate
    • Stainless Steel Exhaust Manifold Block Off Plate
    • Mil-Spec Anodized Aluminum Thermostat Bridge Billet Block Off w/ O-Ring
    • 9th Injector Plug
    • Coolant Line Plugs & Caps
    • All Necessary Gaskets & Hardware
    • Proudly Made In North America

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    2017-2022 Duramax 3.5" Downpipe (WCF100129)-Downpipe-Wehrli Custom Fabrication-WCF100129-Dirty Diesel Customs

    WCF 3.5" Downpipe

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    Tuner Harness Plug Kit
    • Keeps water, dirt & debris out of your trucks harness 

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    2017-2021 Duramax Tuner Harness Plug Kit (GML5PKIT)-Tuner Harness Plugs-Shibby Engineering-GML5PKIT-Dirty Diesel Customs

    2017-2021 Tuner Harness Plug Kit

    • Keeps water, dirt & debris out of your trucks harness 

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    Add Exhaust System

    If you're 'delete tuning' your truck, you'll need an exhaust system. This is where you'll choose how loud you want your truck to be, you won't notice any power gains with a larger exhaust or straight pipe kit. It all comes down to preference here!

    Note: These Exhaust Systems are designed to fit all Wheelbase & Cab Configurations unless otherwise specified.

    2017-2022 Duramax 4" CAT & DPF Race Pipe - No Muffler (FLO-882)-Delete Pipe-Flo-Pro-FLO-882-Dirty Diesel Customs

    4" Delete Pipe Exhaust Kit (No Muffler)

    Stock Appearance

    Retain the stock look and feel of your truck by only removing only the section of exhaust where the DPF & Catalytic Converter sits. Fits just like factory with OEM Flanges on each end.

     

    Retains Factory Tailpipe

    Flying under the radar? Add a Muffler and nobody will be the wiser until you put your foot into the throttle. Choose No Muffler if you're looking to add a little bit of noise to the truck without being obnoxious. 

     

    Factory Size

    The delete pipes include a 4 Inch Aluminized Steel Pipe that fits just like your factory exhaust system. 

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    2020-2022 Duramax 4" Downpipe Back Exhaust w/ Muffler (FLO-20141)-Downpipe Back Exhaust System-Flo-Pro-Dirty Diesel Customs

    4" Downpipe Back Exhaust w/ Muffler

    Muffler:
    It’s still going to bark when you get into the throttle, and when paired with a muffler it’s dulled down to a nice sound that is tolerable for diesel enthusiasts of all ages. 
     
    Full Replacement
    This is a complete 4" exhaust replacement from your downpipe back. These kits will not only sound great, but also increase your mileage while helping keep your EGT's low. 

    Great Sound
    This kit will make your truck a bit louder, while still keeping your neighbors friendly. A bit louder than factory but with a more aggressive exhaust note, these are great for street or track.

    Painless Installation
    These kits mount on your factory hangers and fits perfectly onto your factory downpipe. It's a very straight forward install, just drop your factory system and hang this kit in its place.

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    2020-2022 Duramax 4" Downpipe Back Exhaust - No Muffler (FLO-20141NM)-Downpipe Back Exhaust System-Flo-Pro-Dirty Diesel Customs

    4" Downpipe Back Exhaust - No Muffler

    Straight Pipe:

    Will give a great sound with little to no drone. 

    Full Replacement

    This is a complete 4" exhaust replacement from your downpipe back. These kits will not only sound great, but also increase your mileage while helping keep your EGT's low. 

    Great Sound

    This kit will make your truck a bit louder, while still keeping your neighbors friendly. A bit louder than factory but with a more aggressive exhaust note, these are great for street or track.

    Painless Installation

    These kits mount on your factory hangers and fits perfectly onto your factory downpipe. It's a very straight forward install, just drop your factory system and hang this kit in its place.

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    2020-2023 Duramax 5" Downpipe Back Exhaust (FLO-20151NM)-Downpipe Back Exhaust System-Flo-Pro-Dirty Diesel Customs

    5" Downpipe Back Exhaust - No Muffler

    Straight Pipe:
    It’s deep, it’s droney, and it turns heads 

    Aggressive Sound
    This kit is one of the loudest options for the Duramax, adding a muffler will help with highway drone but it will still produce deep and aggressive tones. 

    Dislike your Neighbors?
    Perfect. This is the exhaust for you.

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    Add Exhaust Tip

    Finish the look on your truck with an Exhaust Tip. These will bolt onto the end of your exhaust and have a dual-wall design for a clean finish.

    For more options go to Exhaust > Exhaust Tips in the navigation menu

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    Dirty Exhaust Tip (Trigger-Exhaust-Tip)-Exhaust Tips-Trigger Industries-Dirty Diesel Customs

    Dirty Trigger Exhaust Tip

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    Universal 4 to 5" Dirty Stainless Exhaust Tip (DDC-EXH-A054)-Exhaust Tips-Dirty Diesel Customs-DDC-EXH-A054-Dirty Diesel Customs

    5" Dirty Stamped Exhaust Tip

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    4" to 5" Dual Wall Angled Exhaust Tip (T5053)-Exhaust Tips-MBRP-t5053-Dirty Diesel Customs

    5" Exhaust Tip

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    4" to 6" Dual Wall Angled Exhaust Tip (T5072)-Exhaust Tips-MBRP-t5072-Dirty Diesel Customs

    6" Exhaust Tip

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    5" to 6" Dual Wall Angled Exhaust Tip (T5074)-Exhaust Tips-MBRP-t5074-Dirty Diesel Customs

    6" Exhaust Tip

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    5" to 7" Exhaust Tip - Rolled End O.D. (T5127)-Exhaust Tips-MBRP-T5127-Dirty Diesel Customs

    7" Exhaust Tip

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    Add an Intake

    Adding an intake isn't about power, it's about reducing the restriction, increasing efficiency, while maintaining strict filtration standards. These kits are offered with a Oil Cleanable Filter and Dry Disposable.

    The Oiled Filter is recommended for those that mainly use their trucks for City or Highway driving and would rather clean their filter instead of replacing it.

    The Dry Disposable is a better option if your truck frequently sees dusty environments or you'd rather toss out your filter instead of cleaning it.

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    2020-2024 Duramax Cold Air Intake Kit (75-5136)-Intake Kit-S&B Filters-75-5136-Dirty Diesel Customs

    S&B Cold Air Intake Kit

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    Summary