I have an LS/VTEC for my '88 Accord LX-i and I am staying OBD-0. I have the PR3 ECU and the PR3 distributor. With this set up there are 2 o2 sensors. The JDM header only has 1 o2 sesnor bung. What can I do to use both o2 sensors? Do I have to get a test pipe with an o2 bung? has anyone had the same problem before? Please any help would be great because I am strating to go crazy trying to finish this up.

 

You need to weld two bungs on the header for them.

 

been there, done that - gained 15whp

you have to get two bosses welded into the 3 and 4 pipes and make sure you remember which ones go where as you cannot connect them back to front...

see here for how to weld teh bosses:


any q's ask me

 

thanks for the pic! So to clarify... I need to weld shut the one on the collector and then weld in 2 new holes on 3 and 4.

Tinkerbell - what do you mean you cannot connect them back to front?

 

no - dont weld th boss, just get a big bolt (called a 'bung') and screw it into where the 4-wire O2 sensor goes

you should also read this thread:

https://honda-tech.com/zerothread?id=317499

PLUS just a hint - always test fit the extractors when working out where the new holes go...

 

good deal! thanks a lot MUCH CLEARER now

 

since your staying obd0 can't you get your pr3 chipped so it works with only one o2?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMBOLONI &raquo;</TD></TR><TR><TD CLASS="quote">since your staying obd0 can't you get your pr3 chipped so it works with only one o2?</TD></TR></TABLE>

From what I am reading I can do that, but at this time I just want to get this thing running. That is something I will definitely be looking into later on this summer. I appreciate all the help guys!