Some may like this little 'off topic' addition.
For historical context we will look at an engine from 1972! (that was run from 1967 in Turbocharged for at your Indy 500). The mighty Offenhauser 159 cube 2.605lt (13B equivalent!) 4 cylinder.
I have a photograph and dyno test details of this engine run on methanol, no IC, and 20% Tolulene blend, it dynoed over 1000bhp on 120inches of mercury = 4bar abs (44psi gauge boost) @ 9000rpm. Did this power to last 500mile race! From 1967 to around 1970 they ran up to 30psi boost and around 800bhp setting... again fairly reliably.
= about 250bhp in NA form 
It's a bit of a JOKE that a 13B rotary is such nugget box and about 40+ years later you still cant meet the power density with Intercoolers, EFI, all kinds of stuff~! and no where near the reliability!!!!!