Stick an old laptop inside that ebgine bay if you need a comp .

I understand how the vnt turbo works, but never bothered to search how it's actually controlled. I will though. And if I find anything interesting, I will post it .

As for the watter/methanol injection, why don't you go for lpg fumigation. IMO it gives more power . I know it's more dangerous but some common sence and ... .