[Nezil]

So the chart above was a shift at 5,800 rpm. I tried on the way home today logging a shift at 6,600 rpm:



To my surprise, the WGDC still drops for 1 second, but the turbo lag was definitely less noticeable. To be honest, I had to brake immediately after the very short pull, so I need to test again on a bit more of an open road.

I'm not sure this clears anything up... The WGDC drops lower than my other log with the earlier shift, but it still drops and slows the boost building.

One other thing that I think is worth noting, is that in the earlier shift, the boost drops to as low as 1.6 psi, whereas when I shifted at 6,600 the lowest the boost went was 4.5 psi. The duration I was off the gas for the shift was slightly longer in the lower rev shift - 0.12s @ 5,800 vs 0.07s @ 6,600.