After reading through countless forums, dyno charts etc, the bottom line is that if you are chasing an easy 220-230awkw from an ej207, youre looking at a max boost spool of 4200-4500.

Obvious choice is 20g xt (18g has slightly earlier spool for not much benefit) or dom 1.5 xtr which seems the peoples choice.

I have to say...its not too much off what my vf22 is doing. Max spool just under 4000rpm, so i guess it wont be so bad day to day.

Question is, would there be a benefit in going 7cm hotside on eith 20g or dom 1.5? And would the power goals still be in reach? Cant find an answer on that one. Most charts are 8cm or 10cm.