GLOSSARY · 65 TERMS
Chip tuning & ECU glossary
Plain-English definitions of every term you'll encounter in workshop ECU tuning — from DPF and EGR to EDC17 calibration internals, TPROT security, and the lambda/AFR conversion that tunes use every day.
Communication
DTC
P0299P0299 — Turbocharger UnderboostP0401P0401 — EGR Flow InsufficientP0402P0402 — EGR Flow ExcessiveP0420P0420 — Catalyst System EfficiencyP2002P2002 — Diesel Particulate Filter EfficiencyP204FP204F — Reductant System PerformanceP20EEP20EE — SCR NOx Catalyst Efficiency
Diagnostics
ECU family
DCMDelphi DCMEDC15Bosch EDC15EDC16Bosch EDC16EDC17Bosch EDC17MD1 / MG1Bosch MD1 / MG1 (latest generation)ME7Bosch Motronic ME7MED17Bosch MED17MEVD17Bosch MEVD17NGC4 / PCM5Chrysler / Dodge NGC4 / PCM5SIDSiemens SIDSIMOSSiemens / Continental SIMOS
Emissions
AdBlueAdBlue / SCR (Selective Catalytic Reduction)DPFDiesel Particulate FilterEGRExhaust Gas RecirculationSCRSelective Catalytic Reduction
Hardware
AutoTunerAutoTuner MasterECUEngine Control UnitKESS3Alientech KESS3MPPSMPPS V21 / V22TCMTransmission Control ModuleTrasdataDimsport Trasdata / New TrasdataTurboTurbochargerWastegateWastegate valve
Security
Sensors
MAFMass Air Flow sensorMAPManifold Absolute Pressure sensorEngine sensorsEngine sensorsWideband O2Wideband O2 / lambda sensor
Service
AdBlue OFFAdBlue OFFDPF OFFDPF OFFDTC OFFDTC OFFEGR OFFEGR OFFIMMO OFFIMMO OFFStage 1Stage 1Stage 2Stage 2Stage 3Stage 3
Tool
Tooling
A2LA2L (ASAP2 calibration description)DamosDamos (Bosch A2L equivalent)FRFFRF firmware containerRomRaiderRomRaider (open-source tuning tool)TunerProTunerProWinOLSWinOLS (EVC Electronic GmbH)