Yet another idle issue

[thebrettster]

Having some trouble with a L92 swap in my 04 Silverado. I got the truck to idle in park and not fall on its face anymore when shifting from park/d. On deceleration/coming to a stop the truck will just die. I've adjusted the in gear idle rpm and adjusted the idle timing with no result. Base airflow has been logged and set as well.

Mods:
L92 with DoD delete
F35 Cam
Long Tubes
3800 Stall Converter

I gotta be missing something. Torque converter lockup?

Thanks in advance!

[edcmat-l1]

Need to log throttle cracker, throttle follower, STIT and LTIT, idle AC airflow. Pretty hard to diagnose idle issues without logging idle pids.

[blindsquirrel]

More like 'Yet another idle issue with a +19 degree [email protected] cam and trying to run MAF-only'

[blindsquirrel]

Does it really have the dinky 29lb non-flex injectors in it instead of the original 50lb 12609749's?

[thebrettster]

Need to log throttle cracker, throttle follower, STIT and LTIT, idle AC airflow. Pretty hard to diagnose idle issues without logging idle pids.

Will add those PIDS now.

More like 'Yet another idle issue with a +19 degree [email protected] cam and trying to run MAF-only'

Does it really have the dinky 29lb non-flex injectors in it instead of the original 50lb 12609749's?

Currently in the middle of tuning the maf but the truck dieing on decel hasn't been helpful. It had 30lb injectors when I got it and I have 60lb injectors coming for it either today or tomorrow.

[edcmat-l1]

Will add those PIDS now.




Currently in the middle of tuning the maf but the truck dieing on decel hasn't been helpful. It had 30lb injectors when I got it and I have 60lb injectors coming for it either today or tomorrow.

What 60 lbs. injectors? What name brand? Did they come with a data spread sheet?

[thebrettster]

What 60 lbs. injectors? What name brand? Did they come with a data spread sheet?

Yes, from FIC

[gtstorey]

Fuel Injection Clinic or Fuel Injection Connection?

Attach the data sheet.

[thebrettster]

Fuel Injection Clinic or Fuel Injection Connection?

Attach the data sheet.

Fuel Injector Connection, I do not have the new injectors yet only the 30lb injectors that were in the motor when I got it.

[edcmat-l1]

Post the data sheet.

[thebrettster]

Post the data sheet.

I do not have it yet, they come on a USB drive when you get the injectors.

These are the injectors,

https://fuelinjectorconnection.com/c...0-cc-for-ls2-1


The injectors that are currently in the motor are 12580681's and I used the data off the Gen4 Injector spreadsheet for those thats posted on here.

[edcmat-l1]

I took a quick look and couldn't find a data sheet on their site. Why are you using such a big injector? Plan on supercharging or turbo charging? If not, they're way too big. You'd have much better luck with something in the 42-50 lbs. per hr. range.

[thebrettster]

I took a quick look and couldn't find a data sheet on their site. Why are you using such a big injector? Plan on supercharging or turbo charging? If not, they're way too big. You'd have much better luck with something in the 42-50 lbs. per hr. range.

Yea its going to end up with a torqstorm. Original plan was for a turbo but due to the setup of the truck, theres no room.

I have a set of 12609749's in another build that I may try to swap over today.