GDI¶

Summary¶

A few GDI ECUs and expansion modules exist:

• Hellen-Hyundai-PB
• GDI4
• GDI8
• Power4GDI
• GM E92 PnP

See How To GDI

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 engines run on variable fuel pressure. Meaning ECU has to request specific fuel pressure and ECU has to control HPFP relief valve in sync with corresponding camshaft to actually build desired pressure.

GDI Status¶

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

Forum thread for test mule

Forum thread for dev board

pump setup manual

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

1. High voltage injection control
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?

See also:

• BMW injector driver
• rusEFI injector driver
• How to GDI Flow Bench using rusEFI GDI4
• How to GDI Flow Bench from Bosch 7506280

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