2020-2022 Duramax Emissions Off Power Package
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.
CSS Tuning Package
Package Includes:
Power Level:
- Stock Delete
- +45HP
- +75HP
- +90HP
- +120HP
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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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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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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.
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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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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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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SOTF Switch
- 5’ OBDII pass-through cable
- Knurled aluminum switch knob and position dial
- Six-position rotary switch
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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+ 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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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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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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- Keeps water, dirt & debris out of your trucks harness
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2017-2021 Tuner Harness Plug Kit
- Keeps water, dirt & debris out of your trucks harness
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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.
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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4" Downpipe Back Exhaust w/ Muffler
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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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5" Downpipe Back Exhaust - No Muffler
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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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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.