I've mapped many many hybrids, from many different suppliers.. and the "compression" arguement put forward just does'nt hold water.. It does not explain how/why other std compression engines on hybrids make power and work "ok", and work "well" in fact.. It sounds more of clutching at straws when there's something prohibiting it from achieving the target/hoped for power. There are so many other variables at play beyond focusing on a single component like a turbo. "Blaming" compression for an underwhelming outcome is nonsense where it does not explain why std 9.5:1 motors on hybrids have performed well. <<< Thats the point I am making.. and I know the source of said so called info....
Skimming the head is not the difference in bumping up was would have been a 9.2:1CR to 10:1, no chance.
What pi$$es me off is when this sort of nonsense gets bantered about so becomes "fact" where it is riddled with holes and is just an excuse on a single example.
As for whatever is being done in France it will have no UK relevance on a UK dyno the majority of folks can relate to I fear. Way way too many other unknowns I guarantee. Logs or its performance would assist folks seeing its true performance.. boost, afr's, logged airflows etc... It will be pretty impressive if it achieves its target output.