Driving impressions: There is an increase in turbo lag (not a surprise), but it is manageable. I may start the throttle a bit earlier than normal, but I am typically easing into it anyway as I unwind the steering wheel so it isn't bad. Also, as I learn to anticipate the delay in boost, I am hoping to be able to unwind the steering wheel at the same time (or slightly before) to preempt any/some oversteer when at the edge of traction. The lag is TOTALLY worth the extra power! There is little doubt that instant throttle response is the ideal situation (like in a V8 or with a super charger), but this turbo is FAR from disappointing. So glad I didn't do the 500.
Here is the video with data:
I haven't analyzed it much. Just noticed that the VRSF Race intercooler seems to be doing it job much better than the CSF I had before.