The O/SA record that was supposedly in the 11's is currently listed at 12.6x on the NHRA websites, so I'm not sure how accurate 11s is. That's also with a stock eliminator prepped car that bears exactly zero semblance to anything anyone drives on the street, other than the tires are rubber.
22hp is a decent difference for ONLY an intake swap on a stock motor. Keep the SM intake, and the engine would not respond to the rest of the mods they did in the same way - right?
Trying to say the intake isn't a big deal by looking at it in isolation is a joke.