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Joecar,
Thank you for the advice- the truck runs much closer stoic than it did over the weekend. I have attached a short log as unfortunately a longer log came out corrupted and I am out of time...

At this point, one that runs, with out blowing up. The truck is used for towing a toy hauler and off roading at Glamis/River so it is dual purpose and does a lot of idling in traffic and not as much...

I will change up to closed loop and see where that takes me.......I try to only change a few items at a time but I think starting from last best run (then backing up a few tunes- which is a guess) is...

This is where the newbie would be applied.......I thought analog was good enough to perform a calc.ve- do I need to make the WB feed the pcm in order to be usefull?

Alright I got it now- I had accidently selected % when my tune runs with kpa. I am going to get a chance tomorrow to take it on the road and get a log under load.

I do have one question- so far...

Yes- I am using it to provide afr data to the log.

I do not think I logged the correct info though as I only got zeros in the map- see attached.

1114511146

Okay- I was using the wrong PID- i picked the one for PLX and did not select the ext.ADX pid.

I am using a V2.

So far I am not getting a reading off the PLX analog out....still working on it

Alright- just finished installing a PLX WB sensor. When testing the gauge the truck seems to be running way lean so I am going to run through the calc ve and see what I learn.

I loaded the COS per the tutoral- flash COS then calibration only from the tune that came on the PCM (calibration 12208511 loaded on OS 12212156).

I do not have a file from when the truck ran...

Alright, I turned off all the MAP settings per the tutorial and the truck wont run.

Sleeper was correct that he did not set up the system- it was my first attempt at loading a COS and I...

Yes it has a vacuum line to the intake but as for any more specifics than that I dont know. It is still the stock Chevy regulator and fuel rail there is not much of an aftermarket selection for that...

The engine runs steady under both cruise and acceleration. When the rpm get down to 1500 it stalls like the key is shut off. Once above 1500 I have not noticed any bobbles or rough spots.

I am...

Okay loaded that tune and same thing I tried -10% changes to the VE up to 30% and did not notice any improvements in the idle. I reloaded the 94 tune so we can take the truck out for the night and...

It screams wide open (Today was the first time that truck has ever broke the 35" tires loose shifting to second). After warm up it wont idle at all and I have to keep the throttle cracked to keep it...

So maybe I misread the data- the MAP boost pressure read the same as the BARO with key on- I assumed it was reflecting atmospheric pressure as I am in the 714 and close to sea level. I loaded the...

At key on engine not running the readings on the pid are as below.
GM.MAP =4.8v and GM.MAPBOOST_DMA =15.2lbs
The dashboard says it reads the MAPBOOST PID as kpa but the data tab shows that sensor...

I changed the MAP to one from a Cobalt which I thought was a 2bar sensor but when I scaled the MAP at 190 the tuck would not start unless the throttle was at 50%. Right now it shows 4.8v and 15 lbs...

L31Sleeper,
Good call on the whippletronics.

I cut them out of the loop and truck runs like a striped a$$ ape again. I appreciate your input and help. I loaded your changes to my calibration as...

I have recently upgraded the computer on my 97 K3500 to a 411 PCM. I installed a custom os and copied the calibrations from the system loaded on the PCM when I bought it (express van). The truck...