i have a 95 z34 and i'm trying to find an O2 simulator, but all the ones that i'm finding are for 96+ vehicles.
Do they make one for my car? Will i be able to go without one? i'm don't know all that much about them. I'm brand new to the monte carlo so i need your help.

 

your 95 has obd 1.5 it is basicly an early version of obd2. GM desided to jump the gun and put out the early version and then it got changed.

i would check part #'s for the rear o2 on your 95 vs a 96z and if they are the same, just get the obd2 sim. all the sim is doing is faking a good signal with a resistor.