Massive dip in stock VVE table makes no sense to me

[liviner]

I'm curious about the shape of this stock VVE table from a 2016 Camaro SS M6. Does anyone have a clue why the stock open manifold switch table would have such a massive dip in VVE at 3400+ RPM and 0.42-0.60 PR? Keep in mind this is 0 intake cam angle. What OEM tomfoolery is going on with this? I know for low load/RPM situations, the VCT tables have large areas where cam angle is commanded as high as 28-29, but those are almost exclusively below the 3400 RPM limit seen in the VVE table. I also provided the VVE at intake 20 for comparison.

stock_vve_intake_0_a.pngstock_vve_intake_0_b.pngstock_vve_intake_20.png

[TriPinTaZ]

My guess it is just a matter of math behind the scenes which made a strange looking graph. The reality is, both of the huge dips in the 2016-2017 Camaro SS VVE table, are out of range of where the engine would ever operate so it is irrelevant.

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There's a thread in here @Cringer is working on a VVE tool https://forum.hptuners.com/showthrea...-Assistant-exe

[Alvin]

I'm curious about the shape of this stock VVE table from a 2016 Camaro SS M6. Does anyone have a clue why the stock open manifold switch table would have such a massive dip in VVE at 3400+ RPM and 0.42-0.60 PR? Keep in mind this is 0 intake cam angle. What OEM tomfoolery is going on with this? I know for low load/RPM situations, the VCT tables have large areas where cam angle is commanded as high as 28-29, but those are almost exclusively below the 3400 RPM limit seen in the VVE table. I also provided the VVE at intake 20 for comparison.

stock_vve_intake_0_a.pngstock_vve_intake_0_b.pngstock_vve_intake_20.png

That spot would be hard to hit driving. My guess is that spot is low priority for the calibrators as it would take unusual driving to get there.. if you could even.

GM has rough VE tables all the way back to the GEN 3 days.