# FAQ

TL,DR: [Hellen-Hyundai-PB](Hellen-Hyundai-PB) and [rusefi GDI pinout](GDI4)

## Q: What are key differences between port and GDI?

## A: high voltage control of injectors, high pressure pump control logic and target fuel pressure control logic

## GDI Status

TL,DR: Summer 2023 progress is happening, GDI4 rev D board is ready for prime time and Kia has driver around the block!

[Forum thread for test mule](https://rusefi.com/forum/viewtopic.php?f=3&t=1631)

[Forum thread for dev board](https://rusefi.com/forum/viewtopic.php?f=4&t=1337)

[Test Mule Wiring Diagram](VolkswagenPassatB6) runs on rusEFI GDI!

Gasoline Direct Injection requires a few additional components on top of port injection:

1) High voltage injection control - we have [rusEFI GDI dev board](MC33816-PT2001-dev-board) which [has clicked injector on a bench - Video](https://www.youtube.com/watch?v=MI0gJ4th9Tg).

2) High pressure fuel pump solenoid control - we have a working implementation!

3) Target fuel pressure logic - we have nothing, but could be as easy as adding a simple table?

![x](OEM-Docs/NXP/pulse-variables.jpg)

![x](OEM-Docs/NXP/WBNR_FTF12_AUT_F0098.pdf_page59.png)

![x](OEM-Docs/NXP/WBNR_FTF12_AUT_F0098.pdf_page72.png)

See also [BMW injector driver](https://rusefi.com/forum/viewtopic.php?f=4&t=1564)

See also [rusEFI injector driver](https://github.com/rusefi/rusefi-hardware/tree/main/GDI-4ch)

TODO: try INJECTOR DRIVE MODULE IDM-2
2013 13 HYUNDAI GENESIS
39175-3C000
2014 Hyundai Azera
39172-3С010