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Duramax · L5P

L5P Duramax Custom Tuning

EZ Lynk remote or HP Tuners late-model path — emissions-intact tow manners, TCM options, Florida meet or nationwide.

Limited $800 · Lifetime $1,300

Pay by: Cash · Zelle · Cash App · Credit/Debit

Who It's For

2017–2026 L5P Duramax

Covers every L5P model year, 2017 through 2026. 2024–2026 L5P trucks need a distinct HP Tuners / E42 workflow instead of EZ Lynk — see our dedicated 2024–2026 L5P HP Tuners & E42 guide before you order if your truck is this new.

Common goals: daily-driver economy, fifth-wheel/gooseneck tow manners, EGT control, and cleaning up factory tip-in or dead-pedal behavior — all buyer language, no dyno guarantees.

Packages

Limited vs Lifetime

Limited — $800

Custom files with a defined support window to get you dialed after the first flash and logs. Best if your truck is mostly done mod-wise.

Lifetime — $1,300

Stay with RDP for ongoing revisions as mods and goals change under Lifetime rules — best for trucks that keep evolving.

Transmission feel is often what owners notice most. Ask for a TCM-matched quote with your ECM tune (Allison, 68RFE, Aisin, 10-speed, and others by platform).

Emissions

Emissions-Intact By Default

Most street and tow customers start with emissions-intact packages aimed at cleaner tip-in, tow EGTs, and drivability — not peak-HP brag sheets. Built or off-highway projects are quoted carefully and separately. We don't publish defeat instructions.

Remote or Local

How It Works

Quote → pay → device if needed → add RDP as your EZ Lynk technician → install files → send a datalog → we revise. Support expectations follow Eastern Time business hours. Local meet-up available around Land O’ Lakes, Lutz, and the greater Tampa Bay area.

Need a device?

EZ Lynk AutoAgent 3 is the usual remote path for supported years on the L5P. Don’t have one? Add it on your quote — we’ll recommend the right cable for your truck (e.g. many 2018+ Rams need a bypass/C23-class cable).

  • EZ Lynk AutoAgent 3 — often ~$549 street
  • 2018+ Ram bypass / C23-class cable — often ~$50–$70 street
  • EFI Live AutoCal V3 — often ~$550–$595 street
  • HP Tuners MPVI3 — often ~$400+ street, plus credits
Add Device On My Quote
Process

Quote To Tuned

01

Quote

Send your VIN, mods, and goals — or buy directly on Priority Purchase.

02

Pay

Cash, Zelle, Cash App, or credit/debit through our secure checkout.

03

Device (if needed)

We'll confirm what hardware your truck needs and how to get it.

04

Add RDP as Tech

For EZ Lynk, add RDP as your AutoAgent technician.

05

Files + Datalog

We send your tune, you install it and send back a datalog.

06

Revise

We fine-tune based on your log and feedback.

FAQ

L5P Duramax Questions

2017–2023 L5P trucks typically run EZ Lynk AutoAgent for remote tuning. 2024–2026 L5P trucks often need the HP Tuners / E42 path instead — see our 2024–2026 L5P guide for specifics.

Yes. Most L5P owners start with an emissions-intact package focused on tow EGTs, tip-in cleanup, and dead-pedal behavior — not just peak power.

Limited ($800) covers your custom files plus a defined support window after your first flash and logs. Lifetime ($1,300) keeps you with RDP for ongoing revisions as mods and goals change.

Yes — late Allison 10-speed calibration (shift firmness, shift points, torque management) is available as part of your quote.

Quote, pay, add RDP as your EZ Lynk technician, install files, send a datalog, and we revise. See our full remote EZ Lynk process.

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Ready For A Custom L5P Tune?

Get a quote with your VIN and mods, or buy Priority — Limited $800 / Lifetime $1,300.

Pay by: Cash · Zelle · Cash App · Credit/Debit

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