After starting this to evaluate the effect of putting turbo blankets over BorgWarner K03 turbochargers I decided to keep the effort going by adding logs that I have of my car with K04 turbos, and some other K04 equipped cars, and then my F4H data logs.  F21 data hasn’t been as easy to come by but I have a couple data points.

I’m a bit surprised to find that the short lived FrankenTurbo F4H spools as well as the K04.

Next I’ll be adding TiAL 605 v1 data to the chart.