Odd....My 89 Vette has oil pressure and temp. Even if the VX doesn't "use" those temp/pressure parms, I'm thinking it won't matter if those sensor bungs are plugged. Or....maybe the VX computer IS capable of displaying them...if extra gauges were installed? I'm guessing FP doesn't matter either. It's computer wouldn't "know" if you fed a new engine much higher pressure....just like the VX doesn't know how you've set it's AFPR. My first thought/question is whether they the newer motor uses O2 sensors that could adjust AFR on the fly?

The bigger thing I considered -- after my prior post -- is whether the 2010 engine has variable valve timing? My daughter had a 2003 Volvo that did. I don't know if/how it's computer differed to handle that...or if they are mechanically activated (rather than electronically)?

Obviously, you could pin-out a newer ECM...and run add'l lines not present. Knowing how wire looms are made/routed, that seems easier than tearing apart a dash.

Have you considered a supercharger instead? Might be less work to get similar gains?