just compound charge it chip, at least thats proven to work properly, and a damn sight less complex.

need a bigger intercooler than usual to cope with the charge temps, and obv the losses from running the charger is always apparent, but people seem to forget having a tiny exhaust housing for half decent spool saps more power than that, and thats something you can do without on tihs setup, infact its not uncommon for boost to always be higher than pre turbo back pressure, good for power and also making the engine suprisingly det resistant.

thats what id do anyhow.

hell, i had all the bits to do it, then i remembered "why fuck about trying to make a small engine act like a big one, im not building the car to any rules, i should just buy the big one and stop wasting money"