17-21 GM Duramax L5P HP Tuners Modified Unlocked ECMHP 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+!

Stamp-forged steel front cover

0 removes throttle response delays

Steel - Frt (Dir/Hi/Rev) Oversize

easy installation

Large Center fuel outlet hole measuring 5/8"

If you are looking for a replacement passenger side up pipe due to a blown out bellow

and TIG welded in the USA

now under positive pressure flow

Not Compatible with Power Wagon

Get the best of both worlds for you 2010-12 Dodge 6

The custom molded silicone hose matches the exact contour/shape of the factory intercooler piping which also eliminates the need to relocate the factory power steering reservoir

For Diesel Engine trucks