Hi all. New guy here. Just got an EF SI HB with a z6 motor put in. The shop that did it rewired my stock harness to use the z6 injectors. They kept the resistor box in place and I'm running my stock '89 SI ecu. Everything I've read says the stock a6 injectors should be used. My understanding is the resistor box adds resistance, which isn't needed on the z6 injectors. Can anyone comment on the pros or cons of my current setup? Should I rewire it back to use the OBD-0 injectors? TIA.

 

did they just solder the 5 wires together??

 

yeah your gonna need to do 1 of 2 things. Remove the resistor box and keep the Z6 injectors or swap the injectors with the A6's. Make sure they are high impedance b4 you go thru anything. It should be in the range of 7.5ohms if there from the Z6 and about 2.5 for the A6's. The resistor box is 5ohms to even everything up. The cons is if you remain this way with the resistor box and high impedance injectors you'll fry your ECU

 

Thx for the feedback.

I'm not sure what they did. There's electrical tape around the injector harness and my old engine still has injectors in them.

So too much resistance will fry the ECU, I thought it was too little resistance will fry the ECU. I guess I should rewire them back.

 

I say convert that BIIATCH over to OBD1 and use the P28 ecu intended for that engine. It will run much better than using the stock OBD0 PM6 ECU and a Vtec controller or switch (ghetto) to control VTEC.

People dont realize that when VTEC is engaged, the other things get changed also. ie. fuel maps, etc,

Simply engaging your Vtec solenoid with a push button switch will never be the same as letting the ECU do it correctly with no check engine light.

I've seen some of this "ghetto" engineering at the track and those people wonder why their cars dont run as fast or well as others who have done it "correctly".

I used to RE-PIN entire cars for OBD1. Heck, now with Jason's harnesses (Blown90Hatch is his user name) running OBD1 will be a snap.

Check him out!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HandCommand &raquo;</TD></TR><TR><TD CLASS="quote">I say convert that BIIATCH over to OBD1 and use the P28 ecu intended for that engine. It will run much better than using the stock OBD0 PM6 ECU and a Vtec controller or switch (ghetto) to control VTEC.

People dont realize that when VTEC is engaged, the other things get changed also. ie. fuel maps, etc,

Simply engaging your Vtec solenoid with a push button switch will never be the same as letting the ECU do it correctly with no check engine light.

I've seen some of this "ghetto" engineering at the track and those people wonder why their cars dont run as fast or well as others who have done it "correctly".

I used to RE-PIN entire cars for OBD1. Heck, now with Jason's harnesses (Blown90Hatch is his user name) running OBD1 will be a snap.

Check him out!</TD></TR></TABLE>

Im with him on this one. I actually need to IM Jason to get my harness today. Plus I need to get a 4 wire o2 sensor. But converting to OBD1 is always the best way.