can i run 2 injectors off the same circuit/driver

2 low-z injectors and what? resistor to use?

 

Yes. In my experience, I just set them up as if I would high impedance. 2 injectors isn't that much of a load. More of them requires you to start using PWM, or resistors.

 

so as long as it see's the same resistance they will work?
i have 1-inj @2.3 ohms + resistor @6 ohms =8.3 ohms

want to use 2-inj @ 2.3 ohms + resistor @ 3 ohms = 7.6 ohms

do i need to find a 3.5 ohm resistor?

 

The impedance on each bank must match. You don't want to put two injectors of different impedance on the same bank.

Also, injectors are wired in parallel, not series. So if you have two injectors of the same resistance in parallel, the resistance is half.