I just wanted to see if anyone is using the Ferrea valve springs or valve stems on FI applications. TIA

I am using the valves + 1mm oversize. on stock valve springs.
If I were to do it again I'd go for 1.5mm oversize :) They did not have stock when I needed them.

Great stuff. Car responded much better with torque in the lower band. I would have had some dyno numbers for you today but my oil return side of the supercharger decided to start leak. So it has to come out AGAIN....