Ecu
`27C256` EPROM Specifications
Technical specifications, pinout diagrams, equivalent part numbers, and speed requirements for the 27C256 EPROM chip use...
`28C256` EEPROM Pinout & Compatibility
Technical specifications, pinout mapping, and socket modification instructions for using the 28C256 EEPROM chip in stand...
82C55 Programmable Peripheral Interface
Technical specifications and pinout mapping for the OKI MSM82C55A / Intel 82C55 Programmable Peripheral Interface (PPI)...
Beginner's Honda ECU FAQ
Archived beginner answers for identifying, selecting, and researching Honda ECUs.
Chipping OBD1 Big Case
This page needs added. I will do it when I get time. If you beat me to it... good for you!
Desoldering Tips & Best Practices
Practical tips, tricks, and best practices for desoldering components from delicate ECU circuit boards.
Desoldering Tools for ECU Modification
Overview and comparison of manual desoldering tools including desoldering pumps, braids, and bulbs.
ECU
The engine control unit reads the sensors and drives fuel, ignition and idle on Honda PGM-FI engines.
ECU Control
see http://www.ecucontrol.com or the ECU Control forum for more information.
ECU Definition Codes
A reference table of Honda and Acura OBD0, OBD1, and OBD2 ECU part numbers, their markets, and corresponding code design...
ECU Hardware
Inside a Honda ECU: the boards, chips and circuits.
EETools ChipMax Device Programmer
Technical specifications, software configuration, and chip settings for the EETools ChipMax USB device programmer.
EPROMer5 Device Programmer
Cross-reference page for the EPROMer5 parallel-port EPROM device programmer.
EPROMer5 Device Programmer Guide
Technical overview and troubleshooting guide for the legacy EPROMer5 parallel-port device programmer used for 27C256 and...
Guide to Bulb-Style Desoldering Irons
Guide to using and modifying budget-friendly bulb-style desoldering irons for ECU chipping and through-hole solder remov...
Guide to Desoldering Stations for ECU Work
Technical guide to using professional desoldering stations for removing multi-pin DIP chips from double-sided ECU boards...
Guide to EPROM and Flash ROM Burners
A guide to choosing and using EPROM/Flash ROM burners for programming 27C256 and SST 27SF256 memory chips in Honda ECUs.
Honda ECU component sourcing reference
Historic supplier part numbers for components used when socketing, modifying, or repairing Honda OBD0 and OBD1 ECUs.
Honda ECU Families & Generations
An overview of different generations and families of Honda engine control units (OBD0, OBD1, and OBD2) and their compati...
Ignitor Replacement
It is possible to replace the ignitor in the distributor with a solid state circuit to trigger the input of a MSD/Crane/...
New Markup Test Page
New lists: asterisks, hash marks, and ";text:def" (wrong...) bullet l1 l2 l2 l3 one two three Term1: definition1.
OBD0 Acura Integra PR4 ECU Overview
Technical overview of the hardware variations, barometric sensors, and unique I/O configurations of the OBD0 Acura Integ...
OBD0 inter-chip communication notes
Reverse-engineered notes on the OBD0 ECU memory bus, peripheral address ranges, and chip-select logic.
OBD0 PR3 Auto to Manual Conversion
Resistor swap procedure to convert an OBD0 PR3 ECU from automatic to manual transmission.
OBD0 ZC PM7 ECU Guide
Hardware specifications, board layout differences, and stock ROM binaries for the OBD0 DOHC ZC PM7 ECU.
OBD1 Honda ECU Architecture and Memory Mapping
An educational guide explaining the hardware architecture, memory mapping, OKI 82C55 I/O expander, and 66k assembly code...
OBD1 PR4 ECU Hardware & Reference
Hardware layouts, component locations, and chipping instructions for the OBD1 Acura Integra PR4 ECU.
OBD1 Prelude P14 ECU Guide (H23A)
Hardware specifications, board layout differences, knock sensor configurations, and ROM files for the 1993–1995 OBD1 Pre...
OKI M6260A Engine Control Counter IC
Technical reference for the OKI M6260A Engine Control Counter IC, a custom timing and I/O coprocessor used in Honda OBD0...
PM6 ECU (OBD0) Hardware & Code Reference
Detailed hardware specifications, pinouts, and custom codebase support for the OBD0 PM6 Civic/CRX Si SOHC ECU.
Soldering Guide for ECU Modifications
A beginner-friendly guide to electronic soldering techniques, tool selection, thermal management, and safety when modify...
Soldering Iron Selection & Guidelines
How to select and use a soldering iron for ECU modification, covering wattages, tip shapes, and temperature settings.
Test Page
New lists: asterisks, hash marks, and ";text:def" bullet l1 l2 l2 l3 \ one two three ;Term1:definition1.
USDM vs. Canadian OBD0 PM6 ECU Differences (ELD Bypass)
Explains the hardware differences between USDM and Canadian OBD0 PM6 ECUs and how to bypass the Electrical Load Detector...
Vise Grip
and indespensible tool :)
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OBD0