ok fireblade here is you exp on the boost bottle ... from a experet in the feild ok,,,,First, they are not in any way similar to Nitrous Oxide (NOS) systems on real cars, the hobby versions don't contain any Nitrous Oxide and they don't boost power.

R/C Boost bottles are designed to store a small amount of vacuum to stabilize the pressure inside the engine. Most people report little or no gain in performance. In many cases, you have to drill a hole in the crank case to connect them.

HPI does not make boost bottles for any engines


later dork .....