Delphi CRD3.7A ECU Tuning
Engine control unit used in 15 supported models from 2 makes.
Infiniti with the Delphi CRD3.7A
All Infiniti tunes- Infiniti Q302015+2.2dAutoTuner
- Infiniti Q502016+2.2dAutoTuner
- Infiniti QX302015+2.2dAutoTuner
Mercedes with the Delphi CRD3.7A
All Mercedes tunes- Mercedes A2015+W176 · 220 CDI (2.1)AutoTuner
- Mercedes C2007+W204, W205 · 200 BlueTEC (2.1), 200 CDI (2.1), 220 BlueTEC (2.1), 220 CDI S&S (2.1), 250 BlueTEC (2.1), 250 CDI (2.1), 300 BlueTEC Hybrid (2.1)AutoTuner
- Mercedes CLA2013+C117, C117-X117 · 220 CDI (2.1)AutoTuner
- Mercedes CLS2010+C218 · 220 CDI S&S (2.1)AutoTuner
- Mercedes E2006+W211, W212 · 200 BlueTEC (2.1), 200 CDI (2.1), 220 BlueTEC (2.1), 220 CDI S&S (2.1), 250 BlueTEC (2.1), 250 CDI (2.1), 300 BlueTEC Hybrid (2.1)AutoTuner
- Mercedes GLA2017+220 CDI (2.1)AutoTuner
- Mercedes GLC2019+X253 · 250 CDI (2.1)AutoTuner
- Mercedes GLK2010+X204 · 200 CDI (2.1), 220 CDI S&S (2.1)AutoTuner
- Mercedes S2014+W222 · 300 BlueTEC Hybrid (2.1)AutoTuner
- Mercedes SLC2016+250 BlueTEC (2.1)AutoTuner
- Mercedes SLK2011+R172 · 250 BlueTEC (2.1), 250 CDI (2.1)AutoTuner
- Mercedes V2013+220 CDI S&S (2.1)AutoTuner
About Delphi CRD3.7A tuning
The Delphi CRD3.7A engine control unit is supported in 15 models from Infiniti, Mercedes. 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.