The TBI mod I followed shaved down some metal on the top of the TBI to allow for more air flow, I did not make the holes any larger just shaved the metal off the top.
Seems like a waste of time, effort, and enthusiasm.
I can tell it’s running extremely rich because I can smell it, the exhaust smells rich, I catch smells of gas, maybe it’s just me. I don’t believe I have any dead or weak cylinders I’m gonna record a cold start up here and post.
The most common cause of eye-watering, "rich" smelling exhaust is misfire. The entire cylinder load of gasoline goes out the tailpipe.
Because the oxygen did not combine with the fuel, the O2 sensor may report a false lean condition, so that the rest of the cylinders get a too-rich mixture.
"I" would be performing a cylinder-balance test to look for dead or weak cylinders. A vacuum gauge on the intake vacuum might be helpful, as would a real scan tool to verify the MAP sensor reading.
The only scan tool I got is an OBD1 reader, yesterday I plugged it in, and just FYI I haven’t had a check engine light come on in forever, anyways I got code 33 MAf sensor signal voltage or frequency high during idle,
Does your vehicle have a MAF sensor?
and I got code 54 fuel pump circuit fault, or mixture solenoid fail/ ECM Fault, don’t even know where to begin with these codes. What scan tool can I get to check
This data?
Follow the procedure for each code in the service manual.
I favor a used-but-usable professional-grade scan tool rather than brand-new consumer-grade junk. Other will disagree, and someone's sure to recommend a special cord plus computer software; and I've got zero experience with that.
Earlier today, I bought another Snap-On MT2500 "Red Brick" scan tool with domestic software to '99. The guy accepted my offer for $150. I figure I can't go wrong at that price--my similar MTG2500 scan tool is getting a little flaky.