The BitEdit Nissan Hitachi Petrol Turbo Gen1 software module is designed specifically for editing the calibrations of first-generation Hitachi ECUs found in turbocharged Nissan vehicles, such as the Juke 1.6T, Tiida 1.6T, and GT-R.

Technical Specifications

• Processor Support: This module supports Renesas SH7058 and SH7059 microcontrollers.

• Supported File Sizes: Compatible with file sizes of 1.0 MB and 1.5 MB.

Calibration Map Categories

The module provides access to a comprehensive array of maps for precise engine tuning:

Boost Control

• Pressure Management: Desired boost pressure, boost pressure limitation factor, and boost pressure cutoff multiplier.

• Wastegate Control: Target wastegate duty, wastegate multiplier, and wastegate duty based on RPM and boost.

Fuel and Injection

• Enrichment: Open loop enrichment for part load and full load, target A/F gains, and closed map injection maps.

• Compensation: Catalyst temperature map and throttle valve injection compensation.

Ignition and Knock

• Spark Advance: Base trimming, spark advance trimming for low and high octane, and optimal spark advance for high and low octane fuel.

• Safety: Unburned advance compensation and per-cylinder knock sensitivity curves.

Airflow and Scalings

• Sensor Calibration: Scalings for the A/F sensor, MAF (Mass Air Flow), and throttle valve opening angle.

• Calculations: Basis for QH0 calculation.

Torque and Limiters

• Force and Torque: Engine torque map, QH0-to-torque conversion, powertrain force maps, and maximal/minimal powertrain force.

• Limitations: Engine speed limitation and vehicle speed limitation (when found).

Diagnostic Capabilities

• DTC Error Mask: Allows users to edit and manage Diagnostic Trouble Codes (DTC).