I haven't checked the part # on the ECU, but when I looked at it last week I noticed it's a #62 ECU, which according to some links I just checked out makes it part #23710-50F00. So my 97-98 blacktop X motor is running a 91-94 redtop ECU.
Which means the fatty O2 sensor I just bought and installed isn't the right one
I guess I can stick it back in the box and try to take it back...
Also, the comment about the water temp sensor...I read last week that one of the *only* things that distinguishes the 97-98 S13 blacktop from other blacktops (and redtops) is a different water temp sensor. And I'm guessing that while my car's running a redtop ECU, it's probably still running the different blacktop temp sensor which could be throwing things off...?
So I guess I need to do the following:
-Drill/tap a 12mm cap bolt so I can run the skinny O2 sensor
-Find/install a redtop water temp sensor
-Buy a new fuel pump o-ring and put that in
-Gap/install new spark plugs (just got some NGK BKR7EIX iridiums today)
-Check my timing
-Find an aluminum hardpipe so I won't have kinked up shit? And triple-check for boost leaks.
And THEN maybe my car will run right =D
EDIT: I pulled ECU codes the other day and got a 55 all clear, would I be throwing a Water Temp Sensor code if I were running the incorrect sensor for my ECU?