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Dan,
Last night I checked the MOSFET requirement for speeduino that only works as is for high impedance injectors, they use a STP25N504Z that is rated for 80A ....They don't recommend you use low...

Dan,
i test a few SBEC and SBEC2 drivers in circuit with my transistor tester but no luck. I guess I need to unsolder them to fully characterize.

Low vs high impedance???? I have no idea what is type A or B.. google search was of no help either

Hi Dan,
I checked a SBEC2 that I have hacked and three that I could read have a PH4947 but I could not find any info on them. Perhaps a special Cryco part number and one also had a Chrysler part...

Hi Dan,
I can have a look tonight to see if I can cross-reference.
My guess is C as the injectors are approx 2 ohm and thus 14/2 = 7 amp albeit for a short period of time