Common Abbreviations in Calibrations ⋆ ECU Remap & Chiptuning Files — DPF, EGR, AdBlue, DTC

🧠 Part of the TuningBot ECU Knowledge Base — in-depth documentation on ECU logic, maps, emissions systems and safe calibration methods.

ECU calibration involves numerous abbreviations.

Air/Boost

MAF (Mass Air Flow), MAP (Manifold Absolute Pressure), IAT (Intake Air Temp), VE (Volumetric Efficiency), VGT (Variable Geometry Turbine)

IQ (Injection Quantity), SOI (Start of Injection), CR (Common Rail), AFR (Air-Fuel Ratio), STFT/LTFT (Fuel Trims)

BTDC/ATDC (Before/After Top Dead Center), MBT (Maximum Brake Torque), KR (Knock Retard)

DW (Driver Wish), TL (Torque Limiter), TM (Torque Monitoring), BMEP (Brake Mean Effective Pressure)

EGR, DPF, GPF, SCR, DOC, TWC, NOx, PM

ECT (Coolant), EGT (Exhaust Gas), EOT (Oil), CAT (Charge Air)