RAZTECHECU ENGINEERING
Calibration
Technical Case Studies

Real calibration projects, documented in detail

Read the engineering write-ups behind specific ECU projects — before/after results, hardware, and engineer notes.

Mercedes W211 E320 CDI — SAM Module Capacitor Repair
Efficiency

Mercedes W211 E320 CDI

Mercedes W211 E320 CDI — SAM Module Capacitor Repair

The SAM module was unresponsive — power windows and interior lighting had failed. Findings: a defective capacitor on the SAM board. The board was repaired, the original SAM stayed in the vehicle, and no recoding was required.

SAM (Signal Acquisition Module)Read
VW Golf 6 2.0 TDI — ECU Voltage Regulator Repair
Performance

VW Golf 6 2.0 TDI

VW Golf 6 2.0 TDI — ECU Voltage Regulator Repair

The engine would not start — no communication with the engine control unit could be established. Findings: a defective voltage regulator inside the ECU. The component was replaced, the vehicle was drivable again, and coding and immobilizer data were preserved.

Engine Control Unit (ECU)Read
Mercedes Vito 2.1 CDI — DPF & EGR Deactivation
Deactivation

Mercedes Vito W447 2.1 CDI 163hp

Mercedes Vito 2.1 CDI — DPF & EGR Deactivation

Track-use DPF and EGR software deactivation for a Vito used exclusively on closed circuits, with full fault-code cleanup.

Siemens / Continental PCR2.1Read
BMW M3 G80 S58 — Stage 2 Track Calibration
Motorsport

BMW M3 G80 3.0 S58 480hp

BMW M3 G80 S58 — Stage 2 Track Calibration

Stage 2 track calibration for an M3 running full bolt-on hardware, tuned for closed-circuit lap-day use.

Bosch MED17Read
Iveco Daily 3.0 — AdBlue/SCR Deactivation
Deactivation

Iveco Daily 3.0 F1A 180hp

Iveco Daily 3.0 — AdBlue/SCR Deactivation

Off-road AdBlue/SCR deactivation for a Daily operating on private industrial sites, with NOx monitoring disabled.

Bosch EDC16Read
John Deere 6.8L — Fuel Efficiency Calibration
Efficiency

John Deere 6195R 6.8L 175hp

John Deere 6.8L — Fuel Efficiency Calibration

Torque-focused fuel-economy calibration for an agricultural tractor running long idle-hour cycles across a 400ha fleet.

Bosch MS6.xRead
VW Golf 2.0 TDI — Recurring DTC Removal
Performance

VW Golf 7.5 2.0 TDI 184hp

VW Golf 2.0 TDI — Recurring DTC Removal

Software-level removal of a recurring P0234 overboost fault that persisted after a turbo replacement.

Bosch EDC17Read
Audi A3 2.0 TDI — Stage 1 +30hp / +60Nm
Performance

Audi A3 8V 2.0 TDI CR 150hp

Audi A3 2.0 TDI — Stage 1 +30hp / +60Nm

A conservative Stage 1 calibration on a daily-driven A3, delivering smooth, safe power gains without hardware changes.

Bosch EDC17Read