2010 Escalade twin turbo on SD. ID 1050X with cam are the mods. Will be steady driving and it will spike airmass and drop into boost level timing which makes it jolt and stutter. Anyone ran into this? It happens at 4:07 ish in log. Once it starts it continues which kills driving experience on highway for trips. Does it with cruise control as well.
newcruisetiminginbetweenknock2.hpt
AirmassSpike4Min7Sec.hpl
2008 Corvette
UPP Twin turbo T4 67mm BB billet wheel kit
427 LME Billet Setup
Fore Innovations Triple 465 L4 Setup
FIC 2150 injectors
RPM TH400/9 inch
Pro Torque Bolt Together Converter
MaxxECU Stand Alone
Something very similar is happening to me at cruise as well. Did you find out what the issue was?
Double check your VVE. Make sure its correct in that cell or that your boundaries are smooth. But I'm pretty sure your hitting a known issue / limitation on the vve on gen 4. Its not reliable enough on boosted cars IMO.
Look at your dynamic airflow during that event. It goes bezerk. Log Volumetric efficiency airflow + Volumetric efficiency mg*k/kpa which will show the exact value inside the vve as you drive. May also want to log airflow calc mode during this event too. It's probably switching during that event.
Would advise switching to MAF. I've seen many instances like this, and going through support was basically told to pound dirt. Wait till this happens during boost and commands 30deg and goes full lean
Here's my experience, and can find many other instances just like this:
https://forum.hptuners.com/showthrea...l-gt-highspeed
Best of luck!
Looking at the tune, your situation MIGHT be the smoothness of the VVE. There is 4-5% variance in area where your having issues. Again log the channels i said, and make sure its reporting the numbers in the VVE.
Your right on the boundary of zone 8,9,14,15. The PCM probably doesn't like the huge variance / spikiness in the table in this area.
2020-04-19 13_12_14-Virtual Volumetric Efficiency Table Editor.png
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