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View Full Version : SR 480cc injector impedance? How to properly test for it?


Zen S14
10-20-2008, 12:57 PM
I need to figure out if my 480cc injectors from the S15 is high impedance (red sidefeed type) I would also like to know where to test on the injector to get the proper resistance using a ohm meter.

Everywhere I've read online seems to indicate the sidefeed S15 SR injectors should be high impedance.

Thanks in advance.

MangoDorifto
10-20-2008, 04:10 PM
S15 480cc Injectors are high impedance. They'll be a direct drop-in, no need for anything else but a good tune afterward.

To test the injectors, just touch the red and black probes on your multimeter to the two pins on the injector itself. The injector doesn't need to be connected to anything for you to test resistance. Your stock 370cc injectors should have the same resistance as your new 480cc.

Zen S14
10-20-2008, 08:04 PM
Thanks for the info. I did test it again tonight and it was 11ohms resistance. High impedance means with the JWT ECU programmed for the injectors I am all set.