injectors
03-03-23, 02:49 PM
#2
High impedance aftermarket injectors require some sort of resistor iirc.
Try searching / reading the PFC sub forum for more: https://www.rx7club.com/power-fc-forum-47/
Try searching / reading the PFC sub forum for more: https://www.rx7club.com/power-fc-forum-47/
03-04-23, 02:51 PM
#4
From https://fuelinjectorclinic.com/faqs/#3:
You can use a multimeter (or ohmmeter) tool to measure the resistance. The factory FD RX-7 injectors are high-impedance, they should measure between 12-16 ohms.
The PowerFC cannot control low-impedance injectors. If you want to use aftermarket low-impedance injectors, you must use an external driver box or add an inline resistor so the resistance is at least 10 ohms. I would not use low-impedance injectors today. There are many high-impedance injectors available that can work well, such as Injector Dynamics injectors.
Question: How do I know if my injector is low impedance or high impedance?
Answer: You can measure the resistance across the two electrical terminals of the injector. If the resistance is between 1.5 and 4.0 Ohm you have low impedance injectors. If the resistance is between 8 and 16 Ohm you have high impedance injectors.
Answer: You can measure the resistance across the two electrical terminals of the injector. If the resistance is between 1.5 and 4.0 Ohm you have low impedance injectors. If the resistance is between 8 and 16 Ohm you have high impedance injectors.
The PowerFC cannot control low-impedance injectors. If you want to use aftermarket low-impedance injectors, you must use an external driver box or add an inline resistor so the resistance is at least 10 ohms. I would not use low-impedance injectors today. There are many high-impedance injectors available that can work well, such as Injector Dynamics injectors.
Last edited by scotty305; 03-04-23 at 02:54 PM.
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