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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...

146403146404

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...

not in here you wont.

Start your own thread

is this a race only type of application?
i se eyour log is 16 minutes long, with 6 minutes just ideling.
Your fuel trims/VE table can use some help, just not sure what type of set up you have...

no sir, you are on the right track.

Your VE table is interesting.
Your spark table is interesting.
You PE isnt even there.
your MAF is weird too
If you had a wideband hooked up youd see there was an issue with your fueling on...

this is true, but a quick WOT log shouldn't hurt anything.
now pass after pass of WOT hotlapping, will probably put a hole in the piston.

Ok,
you need to tune your VE table. So you have the vehicle set up for SD. This means no input from the MAF will tell the computer to add or subtract fuel. Right now you are running on the VE table...

you need fuel trims and lt and st and o2s to be on

you can rent a fuel pressure tester kit from autoozne and oraylies and return it for free.

The ECm/computer from whatever vehicle it came from is tuned for that specific vehicle.
As soon as you...

With your knowledge, what is a good quality regulator that will do this reliably ?

HOnestly, have it dyno tuned by a reputable shop.

If youre still learning, ou cans ee what they did, and learn as you go.
But, right up front with a new build, pay the man to get it up and...

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

try not to mess with anything until you get it to idle.
And actually idle is the last thing you want to start tuning with.
meaning, dont focus so much on the idle, but the ability to get it to...