Originally Posted by JamboRST
well tbh the car was rolling roaded down south so power figs are prob a bit over as to what we'd see up in scotland,but as to say that 240bhp cant be acheived with boost pressures as little as 18 psi
anyway,heres 240ish bhp on 18psi

What's it being rolling roaded down South have to do with anything at all?
Your powergraph seems to indicate a peak boost of about 22psi, assuming I'm reading it correctly as it's not too clear