Any chance VATS got enabled somehow?

I bet the Mexico truck uses the 85mm LS MAF. Do a comparison between the two. Update the MAF frequency vs flow table to the Vortec van one.

I do not see how more airflow, more idle speed and...

If you can get the actual code I can probably pull the vehicle specific Nissan diagnostic procedure for that code from Infiniti Assist software at work.

When you say it won't idle under 1,300 rpm, do you mean it idles high when warm or it stalls if the rpm drops under 1,300?

The closest I have played with to that setup was my 2011 M56S.

I used ScanXL Pro on my Dodge.

https://www.palmerperformance.com/store/product_info.php?products_id=36

What I like about ScanXL is the ability it has to make history tables and really get in...

Not trying to brag at all but I have tuned many platforms and I try to learn more all the time.

GM CCC Q-Jet
GM TBI
GM TPI
GM LT1
GM Vortec
GM LS
JTEC & NGC Dodge
Nissan/Infiniti OBD2

No problem. I guess I just try to pay it forward the best I can. I had alot of help and guidance from numerous people 16 years ago when I first started tuning. I always try to return that...

What are you using for datalogging your setup?

The crank VE tables look normal format to me from your screenshot. To my knowledge the 0411 does not use a crank pulsewidth table. With big cams I always add some extra startup fuel in the low rpm,...

As for your VE table concern, I reversed the equation provided by Tunercats and added it in this new version of the spreadsheet. VE numbers are at the bottom.

Main Spark is Spark Advance vs Load vs RPM High Octane

Idle Spark is Base Spark vs Load vs RPM Drive & P/N.

I just noticed I transposed something when I copied it over. For the IDLE RPM, the...

I am not saying that it will not idle lower. Its just easier to tune an engine that does not try to stall every time you come to a stop or turn the steering wheel a few degrees at idle. Once you...

I am making the assumption that he is starting with the 5.7 Express van 0411 file. If so many of the settings should already be correct for the base setup. Engine size, Injector size, Injector...

I am assuming uou are running an automatic trans. You are going to need a 3,000 stall minimum for that cam. Cam is also really too big for stock Vortec heads as well as the compression ratio you...