Scott,
I recently bought the CGSULIT scan tool I saw in one of your videos. When I plugged it into my 1998 Nissan Maxima, I did a live scan. I have no idea what it all means.
DTC_CN1 0
FUELSYS1 CL
FUELSYS2 CL
LOAD_PTC(%) 25.1
ECT(°C) 60
SHRTFT1(%) 3.9
LONGDT1(%) 2.3
SHRTFT2(%) 1.6
LONGFT2(%) 8.6
MAP(kPa) 28.0
RPM(rpm) 900
VSS(km/h) 0
SPARKADV(°) 7.0
IAT(°C) 25
MAF(g/s) 5.38
TP(%) 1.2
O2SLOC B1S12---B2S1---
O2B1S1(V) 0.500
SHRTFTB1S1(%) 5.5
O2B1S2(V) 0.060
SHRTFTB1S2(%) N/A
O2B2S1(V) 0.050
SHRTFTB2S1(%) -2.3
OBDSUP OBDll
Well you can actually spend hours analyzing all that data you have to learn what each one means what it's right what is wrong when was the data taken is that it idles that admit RPM as well driving it's relatively complex.
The data was recorded while driving. I've tried looking up what some of them means, but the information I found was confusing me. But, I'll try again.
SHRTFT1(%) 3.9
SHRTFT2(%) 1.6
LONGDT1(%) 2.3
LONGFT2(%) 8.6
What catches my attention is the long term fuel trim on bank 2 is adding 8.6% fuel vs 2.3% on the other side. It's probably not tripping your check engine light. It needs to be 20% to do that. Might be a dirty fuel injector, try running some cleaner and check it again.
After adding injector cleaner
SHRTFT1(%) -2.3
LONGFT1(%) 3.1
SHRTFT2(%) -3.1
LONGFT2(%) 7.0
I used STP injector/carb cleaner
This link will explain more about what this fuel trims mean: https://www.mechanic.com.au/news/understanding-short-term-and-long-term-fuel-trims1 you're in the range that the article says is acceptable. I recommend giving it a read, it's pretty interesting how it works.
Thanks for the input.