i have an obd2 gsr in an EK hatch. i am switching to obd1 for the hondata and was wondering which of the 2 sensors i can unplug, is it the on in the CAT or the one that is in the end of the header? any help would be nice. thanks alot

 

primary is on the header

secondary is on the cat

and why unplug it?? the ecu will not look for when its obd1 so it doesnt matter

 

My 96 GSR. Both are on the cat. -

Its OBD2, but now converted back to OBD1. I assume the primary is closest to the header. Why unplug the Secondary? Because, I custom fab an exhaust and not neccessary to create another hole for the sencondary.

Is it me, or the Secondary, seems to be stuCk there? Maybe unplug it "somehow?" and/or tie it up? >_<

 

i want to unplug it because im taking the exhaust off anf cant get the damn sensor out of the cat. so i was just going to unplug it and take the sensor and the exhaust off as a whole

 

Weird enough, I cant even Unplug my Sensor! >_< 2ndary is still hanging there. But new exhaust is coming in. -=D

By any chance, you know what Bolt size will be good to use for a 02 bung? Something to find at Lowes? -=P

 

bolt size as in what the size of the sensor is. all i know is that i used a 15/16 to remove the sensor on the header but i couldnt find what size to remove the sensor on the cat. sorry i am not help

 

its a 13 or 14mm to remove from cat. -=P

I just found out that the BUNG- is 18mm x 1.5 thread. I beleive. -=P COrrect me if Im wrong.

 

Don't know if you're still looking for an answer but I'm doing a search and just came across this thread and figured I'd chime in.

A M18x1.5 bolt fits my Carsound's 02 bungs perfectly