Free tool

MaxxECU map viewer

Open a .MaxxECU-save file in your browser and browse its tables on MTune's own pages. No install, works on Mac, Windows, Linux and phones.

  • Free, no sign-up
  • Your file isn't saved
  • Mac, Windows, Linux, phone

No map at hand? Open an example:

The viewer

What you can see

  • 01MTune's pagesThe same tree, pages and table boxes as MTune, with F5, F6 and F7 for the fuel, lambda and ignition tables.
  • 02Values as storedMaxxECU saves values in display units. The viewer shows them with MTune's own decimals and axis names.
  • 03Click and copyClick a cell to see its axis points. Copy any table, with its axes, into Excel or Google Sheets.
MaxxECU map viewer
Supported files

Which files open

  • Haltech Nexus and EliteOpens
    NSP · .nexmap
  • Haltech Elite (older maps)Not yet
    ESP · .e550-2xx … .e2500-2xx
  • Haltech PlatinumNot yet
    ECU Manager · .hs1-113, .hr32v2-114 …
  • MaxxECUOpens
    MTune · .MaxxECU-save
  • Locked Haltech and MaxxECU mapsPreview, then unlock
    NSP · MTune · password-protected, .MaxxECU-encrypted-save
  • LinkECU, Vi-PEC, ECUMaster, Emtron, FuelTechNot yet

Map viewer by brand:All supported mapsHaltech map viewer

Three steps

How it works

  1. 01

    Drop your file

    Pick a map saved with NSP or MTune, from your computer or your phone.

  2. 02

    We read it

    We check whether the file is locked and decode its tables. Nothing is kept.

  3. 03

    Browse your tables

    Open any table, click a cell to see its point, copy a table into a spreadsheet.

FAQ

Questions

Drop it on this page. The viewer shows its tables on the same pages MTune uses. You don't need MTune, Windows or an ECU connected.

MTune is Windows software. This viewer runs in any modern browser, so you can read your MaxxECU maps on a Mac, a Linux PC, an iPad or a phone.

Yes. The base maps MaxxECU publishes are .MaxxECU-save files and open here like your own maps.

Those are locked. Drop one here and the viewer opens it with part of the real values shown; the rest stay hidden until you unlock it. We decrypt it for $159.99, and you only pay if it works.

No. The file is only used to build the view and is deleted right after. We don't keep a copy.

No. The viewer is read-only. Use MTune to change a map or write it to the ECU.

Map locked with a password?

We unlock Haltech, MaxxECU, LinkECU, Vi-PEC, ECUMaster, Emtron and FuelTech maps. You see proof from your own file first and only pay $159.99 if it works.

Unlock a map