Flyback and Injector Driver Options Discussion.
Intro
- Some of my applications will be max effort, using low-z injectors. I do not want to run out of duty cycle early like on all the SDS ecu cars I tune.
- from what I am reading, there are 4 different ways to control the injectors. 1)PWM 2)powerflyback 3)diode 4)diode/resistor
- I found this:
So far 30v transient Suppresor diodes and 6.8 ohm resistor seems to be the best setup for Low-Z.
Talking Points
1)What is the best injector control setup for low-z injectors?(Delphi 96#,Siemens 83# and 72#,Bosch 160#)
2)What is the best injector control setup for high-z injectors?(Mototron 60#,OEM VW/Bosch injectors)
- Marcell said: I would definitely use high-Z injectors, and 30V transient diode flyback. That's the easiest to tune, and most smooth idle. It's very easy to bypass the 30V with powerflyback, if one has to tune a setup with low-Z injector in some occasion.
3)What about running an external injector driver? Isn't this the "right" way to do it?
4)How do the other ecu companies control low-z injectors? Why do they not need flyback protection?
5)Anybody using Honda or DSM OEM resistor boxes? These often wire to the + side of the injector, one wire in and 4 out. is it possible to use this with the TS diode also? The OEM resistor boxes mount easily,usually have a heat sink, and can be found cheaply.