Uber P72 ROM Map
Technical reference for RAM and ROM address offsets specific to the UberData custom ROM codebase for OBD1 P72 ECUs.
The Uber P72 ROM is a modified Acura Integra GS-R P72 OBD1 ECU codebase designed for compatibility with the UberData tuning suite. This document outlines the RAM and ROM address offsets specific to UberData modifications.
Note
For standard factory Honda/Acura P72 memory addresses, refer to the P72 ROM Map0.
RAM Address Mapping
The following table details the specific RAM locations utilized by the UberData custom code within the P72 ROM structure.
| Hex Offset | Length (Bytes) | Description | Notes |
|---|---|---|---|
645D |
2 | UberData ERM Alternate VTEC RPM | Alternate threshold configuration |
645F |
2 | UberData ERM Alternate VTEC RPM | Alternate threshold configuration |
6464 |
2 | UberData ERM Alternate VTEC RPM | Alternate threshold configuration |
6466 |
2 | UberData ERM Alternate VTEC RPM | Alternate threshold configuration |
Configuration Guidelines
When modifying these addresses, ensure the following:
- Data Integrity: Verify that the checksum is recalculated after any modifications to the ROM image.
- Compatibility: Ensure the UberData version matches the specific ROM base version to prevent memory conflicts.
- Hardware: Confirm the ECU is socketed correctly with a compatible EEPROM (e.g., 27SF512) before flashing.
Warning
Incorrect modification of RAM addresses can lead to ECU instability, engine misfire, or failure to start. Always maintain a backup of the original factory ROM image.