Planning basis: Power is planned from the vehicle baseline and hardware rather than promised from a universal stage number. Diesel output figures are planning references for a healthy vehicle using suitable diesel fuel—not guaranteed dyno results. Final output depends on baseline condition, fuel quality, hardware, weather, dyno type and calibration limits.
Who this path is for
E90 335d and E70 X5 xDrive35d owners choosing among a stock-hardware calibration, emissions-hardware changes, R90 pump support and hybrid-turbo combinations.
Start with the baseline
- Confirm mechanical condition and resolve current faults before calibration.
- Verify the exact engine, DME/software level, transmission and installed hardware.
- Pressure-test the intake/charge system and review injector balance, fuel pressure, cooling and recent service history.
Recommended build path
Stage 1 — $570
Stock hardware calibration for a healthy vehicle.
Stage 2 — $570
Calibration for supported DPF/SCR-deleted competition or off-road configurations.
Stage 2.5 — $690
Stage 2 hardware with an R90 high-pressure fuel pump.
Stage 3 — $790
R90 pump and supported hybrid-turbo configuration.
Calibration and logging
Each file is built around the exact ECU software, injector corrections, boost system, fuel-pressure behavior and installed emissions/exhaust hardware.
Logs should be reviewed for boost control, injection quantity, rail pressure, fueling, temperatures and torque intervention. Additional revisions or hardware may be required when the data shows a limitation.
Supporting considerations
- Injector correction and smooth-running review
- Vacuum and boost-control condition
- Charge-air leak testing
- Low- and high-pressure fuel health
- Transmission condition and torque management
- Catted exhaust option where compatible
Before ordering
Send Kassel Performance the VIN, chassis, model year, engine, DME, transmission, fuel, turbo configuration and a complete modification list. We will confirm the correct service route before calibration begins.
For competition/off-road configurations, the customer is responsible for confirming applicable emissions and vehicle-use requirements.
