I data logged my LS with SCT Live link, need help.

[Mechanicboy]

Replacing the O2 sensors on my LS didn't solve my engine problem. I did about a 5 minute drive last night and data logged it and need some help understanding what I logged.

What's weird is that some of the logs would suddenly spike for a split second then return to normal.
The miss counter only sometimes counted problems I'm having.
The only thing that seems to be associated with my troubles are the short term fuel trims seem to go down when I get the miss/ping.

Is there anyone here that is familiar with seeing data logging on the LS that would look at my file? I could also create another under specific driving conditions if you wanted.

 

[Missing Linc']

Year and mileage? Im just throwing this out there but, fuel pump.

 

[Mechanicboy]

Year and mileage? Im just throwing this out there but, fuel pump.

01' 133K miles. Does the short term fuel trim say what the computer wants to do or what is actually happening? The fuel pressure was good and steady the whole time, the computer read 39-40PSI with only slight variation that seemed to have nothing to do with my engine problem.

 

[PMJJ]

your SFT 1, 2 dropped because you went lean. Do you have a intake leak somewere under accel, or dpfe, or egr is sticking.

Send me the files, I'll take a look at them.

 

[JoshMcMadMac]

What values did you datalog?

 

[Mechanicboy]

your SFT 1, 2 dropped because you went lean. Do you have a intake leak somewere under accel, or dpfe, or egr is sticking.

Send me the files, I'll take a look at them.

PM me your email and I'll send it to you. I know it's not the EGR, I've already checked that. It doesn't throw any codes for the EGR system, if fact it almost never throws a code and when it did it threw a P0304. I changed the coil and plug with another cylinder and it hasn't throw a code since.

 

[Mechanicboy]

What values did you datalog?

Now keep in mind this is my first time datalogging so don't scolde me if i logged the wrong values, just help me log the right ones.

Here's what I logged:

air flow #/min (probably didn't need this one)
baro press cal (or this one)
battery voltage
engine misfire
fp duty cycle
fuel rail pr psi
fuel rail pres
fuel tnk pr cnts
fuel tnk pr inhg
iat sensor temp
inj press drop
intake air temp
ks1 volts
load
lt fuel trim b1
lt fuel trim b2
maf counts
o2 volts b1s1
o2 volts b2s1
open loop flag
rpm
short term b1
short term b2
spark

I'm more then willing to do another datalog with any set of values being logged.

 

[PMJJ]

Was it both banks going lean or just # 1?