The only thing a "boost bottle" does is lighten your wallet. They were first designed to be used on twin cylinder 2-stroke motorcycle engines that utilized an intake manifold design that was shared by both cylinders. It is supposed to collect droplets of fuel during the intake cycle of each cylinder and then redeposit them during the next intake cycle. To do this, the "bottle" was mounted with the intake/exit line mounted facing down or with the bottle vertical. This allowed the collection of fuel to be gravity fed back into the intake manifold. None of these things pertain to the engines we use. Most people install them on their nitro cars for the anodized "bling, bling". They do not help performance. They actually add weight to the car.