Losing boost mid-pull

[robvas]

You should be able to log commanded throttle vs actual

 

[Blue5.00]

You should be able to log commanded throttle vs actual

I can log desired TB angle and actual TB angle, but they look almost identical. Even though I am not pulling off mid pull like the graph shows.

 

[Blue5.00]

Just an update to close off. It was a tune issue - Im fairly sure. Got another tune revision which seemed to fix most of it's "personality" (I do admit some can be attributed to my newness to pd blower driving). Tuner didnt expand much on WHY unfortunately, and Im still waiting for their response to my datalogs.

 

[Bullitt1448]

Red

Yes a fun flex
But in building that monster (‘14 GT500 5.8 with a 2.65 TVS) learned more than I want to on TB DBW and factory tuning (SCT then HP Tuners).
You can see there’s a 6200-7200 range roughly where it exceeded factory load
Parameters and shut the throttle but it reopened at 7200-7500. Had us fighting that and other load limit tables with the TB.
Based on seeing your TB angle close I’d suspect a tuning parameter.
I had several we had to find but it could be it’s fine at WOT but not expecting boost at lower TB angles and shutting you down.
Let us know what VMP says on the tune. Good luck.
-J

just a basic check before loading the parts cannon, and heading down that rabbit hole . check for vacuum leaks at every connection even suggest pulling the blower to check the lower hose unless it’s deleted, mine is thankfully. Smoke test would work best, well you beat me to it, congrats for finding a tuning issue, congrats to you and your tuner for getting it figured out.’