Free ECU map viewer
Open a Haltech or MaxxECU map in your browser and browse its tables, no tuning software needed. 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:
What you can see
- 01Laid out like your softwareHaltech maps open in an NSP-style window, MaxxECU maps in an MTune-style one, with the manufacturer's own table names and units.
- 02Real values from your fileEvery number comes straight from your file. A table we can't read with certainty is left out, never guessed.
- 03Click and copyClick a cell to see its axis points, such as RPM and load. Copy any table, with its axes, into Excel or Google Sheets.
Which files open
- Haltech Nexus and EliteOpensNSP · .nexmap
- Haltech Elite (older maps)Not yetESP · .e550-2xx … .e2500-2xx
- Haltech PlatinumNot yetECU Manager · .hs1-113, .hr32v2-114 …
- MaxxECUOpensMTune · .MaxxECU-save
- Locked Haltech and MaxxECU mapsPreview, then unlockNSP · MTune · password-protected, .MaxxECU-encrypted-save
- LinkECU, Vi-PEC, ECUMaster, Emtron, FuelTechNot yet
| ECU | Saved with | File | In the viewer |
|---|---|---|---|
| Haltech Nexus and Elite | NSP | .nexmap | Opens |
| Haltech Elite (older maps) | ESP | .e550-2xx … .e2500-2xx | Not yet |
| Haltech Platinum | ECU Manager | .hs1-113, .hr32v2-114 … | Not yet |
| MaxxECU | MTune | .MaxxECU-save | Opens |
| Locked Haltech and MaxxECU maps | NSP · MTune | password-protected, .MaxxECU-encrypted-save | Preview, then unlock |
| LinkECU, Vi-PEC, ECUMaster, Emtron, FuelTech | — | — | Not yet |
Map viewer by brand:Haltech map viewerMaxxECU map viewer
How it works
- 01
Drop your file
Pick a map saved with NSP or MTune, from your computer or your phone.
- 02
We read it
We check whether the file is locked and decode its tables. Nothing is kept.
- 03
Browse your tables
Open any table, click a cell to see its point, copy a table into a spreadsheet.
Questions
It opens a tuning file and shows its tables (fuel, ignition, boost and more) without connecting to a car or changing anything. This one runs in your browser, so you don't need the tuning software installed.
Haltech Nexus and Elite maps saved with NSP (.nexmap) and MaxxECU maps saved with MTune (.MaxxECU-save). Older Elite maps saved with ESP, Haltech Platinum and other brands can't be viewed yet.
Yes. Haltech NSP and MaxxECU MTune are Windows programs, but this viewer runs in any modern browser: Mac, Linux, iPad, Android or iPhone.
No. The file is only used to build the view and is deleted right after. We don't keep a copy, and the view isn't published anywhere.
Partly. Drop it here and the viewer opens it with part of the real values shown; the rest stay hidden until you unlock the file for $159.99. You only pay if the unlock works.
No. The viewer is read-only. To change a map or flash an ECU, use the manufacturer's software.
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