As stupid it may seem, it would be pretty easy even if i had to make the reg and a valve.
Use it like nitrous, open the bottle and a regulated low psi air pressure delivered to throttle body. May need to valve the normal intake side though, unless it fed into the manifold? Hell, sod the multi throttle bodies, shouldnt be hard to feed in to the 4 inlet ports direct, skies the limit.
Worst case it would speed the air flow up as pressure would not build up in the air intake without a valve to shut shut off the normal air intake feed from filter.
A 12ltr 300bar bottle would probably last all day, £1.50 to £3 for a fill.