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Revision as of 11:05, 13 May 2024 by Dante383 (talk | contribs) (→‎Siemens L4 2.0L Hardware)
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Welcome to the OpenGK Wiki

Our goal is to open source the Hyundai/Kia Siemens ECMs on the Beta and Delta motors to provide tuning options to the DIY enthusiasts. This project originally started for the Hyundai Coupe/Tuscani/Tiburon platform but as we collected more data from other platforms with similar ECMs, it was clear that those other platforms can be supported using the same principals.

We are looking for smart individuals that have experience with IDA Pro and disassembly that are willing to help push this project further. Please contact info(at) or join our Discord if you would like to contribute to this project.

If you are a tuner and found this site to be useful, please consider a donation to Paypal: donate(at) to help keep the site alive.


VIN Decoder

Hyundai Tiburon

Data link connector (OBD2)


CAN Bus messages


Body Control Module

Instrument Cluster

ECM Tuning:

GKFlasher Instructions

Siemens L4 2.0L Hardware

ECM Identification
2.0L PCB Layouts
2.0L L4 Pinout

Siemens V6 2.7L Hardware

ECM Identification
5WY15 PCB Layout
5WY17 PCB Layout
5WY18v1 PCB Layout
5WY18v2 PCB Layout
5WY1F PCB Layout
5WY1Fv2 PCB Layout
2.7L V6 Pinout

Parts Compatibility

Sensor Information

Fuel Injector Specifications

Camshaft Specifications

Bosch Chip Part Numbers


File Repository