THe only diff I can see is the notch for the harness plug is offset on the hi and in the middle for the low

and they are different colors, its very hard to tell though. you almost need em in front of you, in just so happens that i had some in front of me last week https://www.nopistons.com/forums/pub...DIR#>/ohmy.png

That's what I'm talking about. That's how you identify high impedance injectors in any application by the offset tab.



But seriously MIKE! Trust me, these injectors are the same colour!