Marelli 8GMW ECU Tuning
Engine control unit used in 2 supported models from 2 makes.
Abarth with the Marelli 8GMW
All Abarth tunes- Abarth 5002014+1.4 Multi-AirAutoTuner
Fiat with the Marelli 8GMW
All Fiat tunes- Fiat 500L2012+1.4 Multi-AirAutoTuner
About Marelli 8GMW tuning
The Marelli 8GMW engine control unit is supported in 2 models from Abarth, Fiat. We read, modify, and flash it with AutoTuner, then verify the result on our Dynojet 424xLC2 in Jenison, MI. A custom calibration optimizes fueling, ignition timing, boost, and torque limits for your exact build.
Don't See Your Vehicle?
These lists cover off-the-shelf tuning platforms. We also do standalone ECU installs and custom calibrations, so reach out and we'll tell you what's possible for your build. Compatibility data last updated 2026-09-24.