Technical Information OBDI ECU Reference
These are the ECUs which Hondata currently provides systems for. Here is how to identify your ECU. Please note that some ECU codes (e.g. P72) are available over more than one generation (e.g. OBDI and OBDII), therefore it is important to identify the ECU connectors as well as the ECU code. Some automatic ECUs can be converted to manual, other automatic ECUs are not suitable.
If the ECU is not listed, then Hondata does not offer any system for that ECU, however it usually is possible to use another ECU for your vehicle. See applications by engine or applications by vehicle to identify what ECUs can be used for your engine/vehicle combination.
Also see K-Series ECU reference.
1989-2001
ECU | Connectors | Country | Vehicle of Origin | VTEC | IAB | Knock | Hondata Systems | Notes |
PR3 | OBD0 | JDM | 89-91 Integra XSi | X | X | no longer supported (convert to OBD1) | 2 | |
PW0 | OBD0 | JDM | 89-91 Civic/CRX SiR | X | X | no longer supported (convert to OBD1) | 2 | |
PR3 | OBD1 | JDM | Integra XSi | X | X | s300 | 2 | |
PR4 | OBD1 | US | 92-93 Integra LS/GS | s300 | 1,2,3 | |||
P06 | OBD1 | US | 92-95 Civic DX | s300 | 1,2,3 | |||
P08J | OBD1 | JDM | 92-95 Civic D15z |
X
|
s300j | 1,2 | ||
P28 | OBD1 | US | 92-95 Civic Si/EX | X | s300 | 1,2 | ||
P30-A | OBD1 | US | 92-95 Del Sol VTEC | X | X | s300 | 1,2 | |
P30-O | OBD1 | JDM | 92-95 Civic/CRX | X | X | s300j | 1,2 | |
P30-G | OBD1 | Asia/Euro | 92-95 Civic/CRX | X |
|
s300 | 2 | |
P61 | OBD1 | US | 92-93 Integra GSR | X | X | s300 | 1,2 | |
P72 | OBD1 | US | 94-95 Integra GSR | X | X | X | s300 | 1,2 |
P72J | OBD1 | JDM | 92-95 Integra VTEC | X | X | X | s300j | 1,2 |
P74 | OBD1 | US | 94 Integra LS/GS | s300 | 1,2,3 | |||
P75 | OBD1 | US | 95 Integra LS/GS | s300 | 1,2,3 |
Notes:
- Discontinued Hondata s100/s200 and Stage 2/3/4 systems will work for these OBDI ECUs but it is recommended to use the s300 system.
- Can be used only on vehicles with manual transmissions only.
- With the s300 non-VTEC ECUs may use an alternate output (ACC, FANC etc) to activate the VTEC solenoid.