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Tuner in Training
Drop in Cyl Airmass - Lean Spike E38 VVE tuning
Hi all,
Trying to see if there are any of you that have had this issue.
I am tuning VVE. I get a large drop in cyl airmass which leans me out. It has happened under partial throttle and WOT.
LS3 C6 that is running e38 ecu - just headers and catless xpipe.
Drop Chart.png
On this particular log, cyl airmass goes from .85 to .42 and then back to .85.
MAF IS FAILED.
I did notice while poking around there is a SD Air Patch. The description is a bit vague. Would this help me?
I have tried multiple VVE Tables now, changing my boundries back to stock, etc. I do have a great tuner helping me but figured I would post here as well since I come here for a lot of my questions.
Will update here if we find anything off the forums so hopefully we can help someone else down the line..
Below is the tune.
Step 9 - Step 7 Map Original Zones.hpt
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Advanced Tuner
disable injector de soot switch
disable fast tq exit and max the values
set dynamic disable and re enable to 8000rpm under airflow dynamic
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Advanced Tuner
if u want SD apply the custom OS, so much better IMO
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Tuner in Training
Appreciate the help.
The tuner helping me through this did note that 8000rpm change as well. That seems to have cured my issue and I have the VVE pretty close now.
Any more info on that desoot? Is that something I should do anyways? Will I need to go back in and tune the VVE again?