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  • Regular price $0.00

Currently L5P Tuning is 1-2 Day Turn around. It requires you to attach your Stock File. All Krazy On Highways Calibration(s) for the L5P are built off your original calibration. TCM Tuning Calibrations are built to suit your needs, we strongly advise at the minimum to increase your Line Pressure to hold the added power.

Calibration(s) 2017-2019 
0hp – Modified Stock (Deleted)

25hp – TOW
45hp – ECONOMY
75hp – HOT
120hp – STREET (Built Trans Recommended)
150hp - RACE (Built Trams Recommended) 
180hp - PULL (Built Trams Recommended)

*These Tunes are custom and are made specifically for your race truck. Please let us know all of your engine mod(s) eg. Lift Pump, Intake, Turbo, Injectors, Cam, Bigger Intake etc.


HP Tuners exclusively presents our L5P Modified ECM Purchase & ECM Exchange Service, giving you the power to tune your 2017+ Chevrolet Silverado / GMC Sierra 2500/3500 6.6L Duramax. You now also have the option to either purchase an HP Tuners Modified ECM or send us your original ECM and we will exchange it for a HP Tuners modified one. Both options give you full access to calibrate, log and scan via the OBD2 port with your MPVI2 and VCM Suite 4.3+!


L5P Modified ECM Purchase

This option allows you to purchase an already Modified ECM from us, and you keep your original ECM. Remember, do NOT send us your ECM.

  • Modified ECM Purchase: $1499.99 (no core needed)
  • ECM (E41) License: 8 Universal Credits


L5P Other Controllers
In addition to our L5P E41 ECM support, you can also license the following
  • TCM (T87A) License: 4 Universal Credits + Unlock

Note: No unlock is required for CCM or FICM controllers.

L5P Exchange Service
Select this option to send us your original ECM and we will Exchange it for an already modified ECM. Remember, you MUST send us your ECM first!
  • ECM Exchange Service: $649.99
    • (send in a core, receive a modified core back)
  • ECM (E41) License: 8 Universal Credits

– Once you have placed your order and provided your VIN, you must send us your original ECM first.
– Your ECM must be in functional, original, unopened and unmodified condition.
– You will not receive this same ECM back as this is an exchange service only. The ECM you receive has been modified to enable tuning.

HP Tuners reserves the right to refuse exchange of any ECM sent to us as part of this service.

Notes Before You Order
  • Your modified or exchanged L5P ECM can only be tuned via the OBD2 port with HP Tuners VCM Suite 4.3+ and an MPVI2.
  • To tune your L5P ECM you require 8 Universal Credits, an MPVI2 with the latest firmware, the latest version of VCM Suite and an internet connection.
  • No other tuning or calibration tools can be used with the ECM (including dealer reflash tools).
  • VCM Scanner, dealer diagnostic and other diagnostic tools will continue to function normally.
  • VCM Suite 4.3+ can be used to return to stock calibration and/or update to the latest stock calibration.
  • Vehicle Anti-Theft System relearn by a dealer tool is required once the ECM is returned to the vehicle.
  • Please also allow at least 3 business days for this exchange service not including shipping times.