Pay in 4 interest-free payments of $50.00 Learn more
Ships within 48 hours · Estimated delivery Aug 15 - Aug 20
If you Select 4" or 5" modification will be required
and Inspected
the GM E41 ECM Upgrade Kit is still be required
all valve body components are meticulously inspected for wear and damage to ensure only quality parts are used
Better valve control
HPTuners E41 Upgrade Kit Purchase or Rent:Rental If you Select 4" orConveniently upgrade your E41 ECM, found in the 2017 2023 Chevy Silverado and GMC Sierra 2500 3500 6. 6L Duramax trucks (L5P and L5D applications), without removing it from the vehicle. Upgrade your E41 ECM in 20 minutes or less! This ECM upgrade kit enables read, write, and special functions in VCM Suite software using an MPVI2+ (with Pro Feature Set) or MPVI3 interface. If you own a 2018 2023 model year, you can upgrade your truck directly via the