The hose running to an external airfilter will help your engine slightly. It is giving the engine the cool fresh air it needs instead of warmer air that has been circulating inside the shell.
As for Boost Bottles:
To put it simply, Sweet FA.
Superchargers, turbochargers and boost bottles do not work. If you want more power, add a 0.1mm shim under the engines head to lower the compression and run a higher % of nitro. That is the only way YOU are going to get any more power from your engines.
Go to this website and read it all. It will teach you something about the basics of engines and how they operate.