Denso 4N15 ECU Tuning
Engine control unit used in 2 supported models from 2 makes.
Fiat with the Denso 4N15
All Fiat tunes- Fiat Fullback2016+2.4 DAutoTuner
Mitsubishi with the Denso 4N15
All Mitsubishi tunes- Mitsubishi L2002015+2.4 Di-DAutoTuner
About Denso 4N15 tuning
The Denso 4N15 engine control unit is supported in 2 models from Fiat, Mitsubishi. 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.