SuperM has has the engine built with low compression pistons. So there is a power loss there, but he pro is that now we can boost 1 bar. I am having issues with fuel delivery & need to substantially increase the fuel flow with a dual-pump setup & lot of associated changes. Car is on low boost (0.5 bar) while this is being sorted. Here's a shakedown 0-270 run on low boost and then a vbox run on street tyres:
[video=youtube]
[video=youtube]