Preliminary report. Just starting to analyze the data.
Before the valve, I was lucky to muster a 1.6x 60 foot with a very unsafe n/f ratio tune.
After the valve with the same unsafe n/f tune: 1.556 60 foot.
After richening the n/f ratio on the nitrous tune, and still using plenty of nitrous retard: back to a 1.63 60 foot.
Still plenty of tuning to do.
The time that the valve was set to operate was 2.0 seconds. That included a time span of about .940 seconds pre-launch, with the nitrous activated for the last .465 second of that pre-launch time.
The car launched out of the hole with a more consistent pull, instead of a hit, lay down, then a spotty pull to turbo boost. With all that I have going on with the car with all the systems and such, the launch felt seamless. A nice, smooth launch.
I wonder if the valve, offering a different exhaust backpressure when closed, had more of an effect on how the nitrous worked rather than having any significant affect on spooling the turbo. At first glance, it doesn't appear that the rpm to map point relationships changed much through the initial low boost region (0 to 8 psi boost).