I checked in the FAQ's and it didn't help.

When researching swapping the harness from DPFI to MPFI, I had some exception that said I wouldn't need the injector resistor box. Anyone know which guide I was looking at, or what that exception was? I'm thinking it was either because I have an STD, or because I'm going with OBD1. Can't remember though.

So if you know of one of hte DPFI to MPFI swap pages, link it here so I can look at 'em til i find it.

Thanks, everyone!

For what it may matter, I'm putting an OBD1 PR4 B18B LS into my 91 Civ Hatch OBD0 STD with D15B2.

Thanks, again!

 

Its because you are going OBD1 but its more dependent on which injectors you choose to get...I'd only waste the time wiring it in if you plan to turbo in the futurs since DSM 450s are cheap and you need one for them if not the just use 92+ civic or 94+ Integra injectors

 

I've got the 94+ integra injectors. Not sure I'm going turbo or NA, yet. For now, it's just gonna be stock, so I guess I DON'T need a resistor box? Correct me if wrong...?

 

Bump for a double-check.

 

similar setup here with NO resistor box. runs great

 

All I needed to hear. Bingo. Thanks, all!

 

That's correct.
OBD0 injectors (or h22/dsm inj) - Resistor box.
OBD1 and OBD2 injectors - No resistor box.
We call these "saturated" (no resistor, 12v+ needed) and "low-impedance" (resistor, 5.5v+ needed)