Catalogue identity
The TuningService.uk ECU catalogue records EDC16C4 under Bosch EDC16 (catalogue record 1584, observed 10 November 2026). The catalogue name is an identification lead; it does not by itself prove vehicle fitment or software compatibility.
Application evidence
AutoTuner’s compatibility list associates an EDC16C4 entry with Audi. The list alone does not establish a particular engine for every C4.
Tuning and identification
Confirm the exact application, controller and calibration before choosing a definition or a programming protocol.
Read EDC16 torque fuel and tuning basics and EDC16 variant application and tuning differences for the shared context. Examples are not an exhaustive fitment list; check the installed ECU and current tool documentation.
Additional source evidence
AutoTuner’s compatibility list identifies its Audi EDC16C4 entry with an MPC556 processor. That entry is an identification lead rather than an engine-specific fitment guarantee. AutoTuner ECU compatibility list.
Identification photograph
This Audi-labelled ECU shows EDC16C4, Bosch 0 281 011 099 and Audi 4E0 907 409 B. The listing describes an A8 4.0 TDI example; the full identification and vehicle configuration are needed to establish compatibility.
Sources
Curated reference notes. Applicability follows the cited sources; hardware testing by this wiki is not implied.
- TuningService.uk owner ECU catalogue. TuningService.uk master ECU catalogue; administrator access required. Active Bosch EDC16 labels observed on 10 November 2026; this is a dated observation, not a live feed. Source revision Catalogue records and identifiers as observed 2026-11-10; accessed 2026-11-10.
- AutoTuner: ECU compatibility list. AutoTuner; tool coverage by manufacturer and ECU, not a comprehensive fitment claim. Source revision Compatibility list; accessed 2026-11-10.