obd1 gsr motor and civic. type r style intake mani, deleted black box and have external catch can. ....it comes out of the harness right before it goes to injectors. i have nothing else to plug in. i have another thread of another sensor that is square by the battery with nothing to plug that into......?

 

that look like the plug that connects to your VTEC solenoid...but its on the other side of the manifold, bolted to the head...that or maybe a connector for a o2 sensor? do you have any CEL?

 

Actually that is not the VTEC solenoid plug, I believe that's for the IACV that is on the back of the intake mainfold.

 

iacv is plugged in

 

if it is the gsr harness then more then likley it is the secondary butterflys but if you let me know the colors of the wires I can confirm

 

Well don't know the GSR motor, good luck with that.

 

my current harness has that too,i think it the sensor that goes into your cold air intake or what ever intake you have,but please dont take my word for it

 

Post the colors of the two wires going to the plug and i'll tell you what its for.

 

its pink/blue and yellow/black
what is plugged into the iacv is blue/black and yellow/black

 

IAB solenoid (secondary butterflies) Its only used on the stock GS-R/JDM SiR-g intake manifolds.

that is the correct plug for the IACV.

 

thank you

 

Yeah man, that style plug is used so much that it would be really difficult to actually say what it goes to. Wire colors would be your best bet.