H-Bridge DI Spill Valve Wiring

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Chris Ludwig
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Joined: Tue Oct 31, 2023 12:48 am

H-Bridge DI Spill Valve Wiring

Post by Chris Ludwig »

Using an S-GDI ECU to run a Mazda 2.3T DI engine. Confused by the wiring for the spill valve to control DI fuel pressure. Software won't allow you to simply select HB1/2. Under IO Slaving you can slave Ign12 to Fuel12 and then assign Ign12(Fuel12) to the Direct Injection Pump. If I then enable HB1 Slaved To Ign8/12, do you connect HB1 to the other side of the spill valve? Meaning Fuel12 (pin 32) would connect to one side and HB1 (pin 58) to the other side of the valve? Thanks!
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