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here is some reading for you https://forum.hptuners.com/showthread.php?36318-Idle-Tuning-How-To-amp-Guide-(w-pictures)

and if you have registered your hptuners MVPx then go tot he hptuners.com...

can always post a picture of it
im sure we can tell from the pic

this is not typical

id pull those and install these, actual factory GM injectors that all the data for them is easily found here in this forum.
https://www.ebay.com/itm/274424906026

Your VE table is spikey, id highlight the area and click the smooth selection 2 times.
idle is something you focus more on the end of VE/timeing/MAF tuning
once warmed up to op tempt everything...

fire it up, get alog and post it

should be a fun little combo

WOW

That might be the best for 2024 so far...

are you tuirbo or SC ?

why the deka 80s on this engine?

id ditch all that and put the stock t body and intake back on... it was a 3 bolt right, and youve know x linked a 4 bolt throttle body on it?

Did you change the intake vlume/scaler or anything to...

this should be all you need

https://forum.hptuners.com/showthread.php?36318-Idle-Tuning-How-To-amp-Guide-(w-pictures)

there is a few on the search bar

https://forum.hptuners.com/showthread.php?68834-tuning-the-Vortec-blackbox-pcm-advice
...

get a data log and post it up so we can see what else can be helped with.

this is a good info thread on what idle trims do

https://forum.hptuners.com/showthread.php?922-Setting-base-running-airflow-via-LTIT-and-STIT

are you positive the O2s are in the correct spots?
sometimes they get switched and the left bank is reading the right bank

0411's and all other LS style computers are $25 at the local part yards around me

once you buy credits and unlock it. Thats it, that computer and that ECM are married for life.

yes, you use the search bar at the top.

https://forum.hptuners.com/showthread.php?96757-Injector-Data-Repository

posting the tune is only a part of the prcoess.
You need to post a log as well.
This way we can compare the tune, with the log, to otgher tunes we might have and see what you can or need to...

yes, you didnt follow the rules when you signed up, and now have made a post without a tune and a scan so, no, nobody has any idea what the problem is until you upload those 2 things.

the vacuum hose to the fuel regulator is in 2 pieces.

This is why i hooked up the scanner so i can see what is going on before i did anything to it.

I know zero about this vehicle, and see...

it's like the floor is lava ...

32lb Denso #25326903 Flex Fuel Fuel Injectors

the fuel vacuum reference tube was split on both ends. Ive been smelling some raw fuel so i thin the diaphragm...

lol... yea yea yea, just got this thing dropped off, just looking a things.
cam unknown, injectors unknown, Tbody stock

the rolling idle through me for a loop as it started out of knowhere and...

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so no CAI, no headers, no custom exhaust, nothing, just a cam in a stock engine?
any pics of engine?

This is a 1998 chevy truck swapped with a 5.3/4l60e.

This is what I am assuming a budget swap would be.
The ECM has some type of tuning down to it, and at first start this jumps to a loud 1200...