My lo-imp. injectors on my 86 (secondaries) aren't working, I have a set from my previous 88 and was wondering if all S4 injectors would be interchangeable. I ask this because I have been advised to cross-reference the number on the injectors. One set has "Denso" and some numbers on it while the other set only has the number "23" but they look completely identical. Please let me know.

 

look in the Stickies on the sec gen Specific or archives.there is info on the injector Numbers and what the application is for.
86-87 was lo impedance with resistor pack,
the 88 had no Resistor pack and HI's..Hai...haha!

 

i tought 88 are low as well (with the resistor pack) except the 10th ae. But i am probably wrong.

 

if the plug is the same they are low impedence and will work