This is an OBDI PR4. Looking at this, it looks like I have resistors 136 and 137, no 138. can anyone confirm this for me?

also, reading around I'm getting mixed opinions on using D10 for the WBO2 input. Some say using D14 is better, others say the EGRL input is the best option for input...what's with all the conflicting info?
Do hondata ECUs not use EGR at all?