MM8GSFHW521 3AS27ES4 Magneti Marelli MM8GSF Fiat 500 (0.9 TURBO 85hp) Original ECU File
About this file
This is the original ECU file MM8GSFHW521 3AS27ES4 for Fiat 500 0.9 TURBO 85hp: Magneti Marelli MM8GSF, hardware (HW) MM8GSFHW521, software (SW) 3AS27ES4. To buy it, use Quick buy below — €20 by card, no registration, a ready-to-use .bin file by e-mail — or buy it with a file-service account (register or log in and top up your balance). Also you can find all available options on our platform for emissions removal (DPF, EGR, AdBlue) or improving power with stage 1/2/3 or ECO tuning.
This is an original (stock) read of a Magneti Marelli MM8GSF control unit. Our catalogue lists it for the Fiat 500 0.9 Turbo 85hp.
Its numbers in the catalogue: hardware (HW) number MM8GSFHW521, software (SW) number 3AS27ES4 and SW upgrade number 51903129.
In our catalogue the hardware number MM8GSFHW521 is on 2 files for 1 vehicle.
All Fiat 500 Magneti Marelli MM8GSF files: 6 in our catalogue.
What you receive
- The original (stock) read of this ECU, exactly as read — no modifications.
- A ready-to-use .bin file by e-mail — nothing to unpack or rename.
- The original read only — no full backups, EEPROM, SGO, VBF or other formats.
Before you order
- All sales are final. Check HW, SW and calibration against your own read before you buy.
- Different tools expect different file sizes when writing to the ECU — make sure the file suits your device.
- Not sure? Ask us on WhatsApp before buying.
File specifications
| Brand name and model | Fiat 500 |
| Engine power | 900 TURBO 85HP |
| Engine code | — |
| ECU brand name | MAGNETI MARELLI |
| ECU model name | MM8GSF |
| ECU hardware | MM8GSFHW521 |
| ECU software | 3AS27ES4 |
| ECU calibration | MM8GSFHW521_3AS27ES4_51903129 |
| ECU SW upgrade | 51903129 |
| Also written as | MM8GSFHW521 3AS27ES4 51903129 |
| Other files with these numbers | HW MM8GSFHW521 |
Get this original file — alone or with its WinOLS map pack
Quick buy
Pay by card — get a ready-to-use .bin file by e-mail
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- A ready-to-use .bin file by e-mail — no unpacking needed
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- Last 30 files arrived in 70 seconds (median, payment to e-mail). Some files are prepared by the supplier's operator first — normally within 24 hours
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- No bonus, no tuning support
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Original + map pack
The original .bin and its map pack (CSV) — for WinOLS and compatible software
- 26 tuning maps for this software version — Engine Torque, Injection System, Turbo System, Limiters…
- X / Y axes labelled correctly, correct factors
- One ZIP by e-mail: .bin + .csv map pack
- Axes checked against this original: 28 of 28 read correctly
- No account, no sign-up — just your e-mail and a card
- VISA
- Mastercard
- Apple Pay
- Google Pay
- Map definitions only — no tuned file, no support
- All sales are final — check HW / SW before you buy
Buy with a file-service account
Requires registration on our file service fs.auto-remap.com
- Register on the file service fs.auto-remap.com
- Top up €40 — get €50 extra (€90 on your balance)
- Buy this file for €20 — €70 stays for more files or a tuning job
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Maps in this map pack · 26
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WinOLS map pack for this file 26 maps
A WinOLS map export (CSV) made for this software version: tuning maps only, with correctly labelled X and Y axes and the correct factor for the data values — no maps for switching off emissions or errors. Maps by category:
For example: Optimal engine torque, Torque during cranking f(RPM,ECT), Injection at full load, Injection base map, Limiter of impulsive turbo pressure, Linearization of impulsive turbo pressure, Maximum speed of vehicle, RPM Limiter…
See all 26 maps and buy — €60 All Magneti Marelli MM8GSF mappacks
We modify this exact ECU for you
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- DPF / FAP OFF
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- DTC OFF
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