Your OS has the rolling idle tables.
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still have to play around with spark and airflow but, whatever you changed definetly helped. It only surged maybe once or twice in my whole driving experience today.
best drive yet.hpl
Throttle cracker and idle spark corrections. If you want to see changes between tune files Compare>Open Comparison file then Compare>View Comparison log. Another way is Edit>View Change/History Logs.
I just noticed that you had SD settings incorrect. P0101-P0103 were MIL On Second Error. Those need to be First Error. MAF Fail Frequency High should be 0 not 100Hz. Applied below.
Accurate VE is a huge component of idle stability btw. Normally I would have checked those settings a long time ago, but your VE table looked legit. Still, let's check. Run another log if you don't mind.
Let's throw some EOIT in there while we're at it. SS2 cam I presume? Use VCM Scanner>Vehicle Controls and Special Functions to clear LTFT's after flashing the tune.
Last edited by SiriusC1024; 03-12-2024 at 11:39 PM.
After loading the tune close VCM Editor then open VCM Scanner. Go to Vehicle Controls & Special Functions. LTFT reset should be under the Fuel tab.
See how this does. I lowered the idle spark area to 18* from 23*. At idle the spark corrections are driving down spark to the 20* range and are compensating wildly. The goal is to smooth out idle. Increased throttle cracker a bit, reduced base timing for KR, turned off burst knock (predictive with throttle stab), and worked VE.
It's good. I used that reset log.
Truck is running good didnt stall out or anything on my drive i know i still need to adjust ve a little but lmk what you think.
3-14-24.hpl
Yeah VE needs adjusted, but I'm looking at the O2 traces and seeing a few inconsistencies. Does this truck have longtubes installed? Seems things got worse as far as idle stability from the last log. Went the other way with idle spark and airflow. There are a few changes in this file, so let's see how it goes.