Thanks for the reply.
I'm still looking for some maps for 440cc injectors, ej20 engine, VF turbo (15 psi - 18 psi). Also if anyone has successfully set up the V5/V6 WRX/STI knock fine tuning for the G4+ I'd be delighted to hear.
I'm a bit stuck, as where i live there are no tuners, although i do have 98RON available. So i was wondering where i can find a couple of maps to view and tweak slightly.
I've got the expansion loom + IAT on the way, I'll use the MAF input for the time being as per your suggestion.
I'll check out HP academy, thanks.