You're right, I was joking. The "boost" bottle I just bolted on can actually give me 20, 30, 40, or even 50 HP. [img]i/expressions/face-icon-small-wink.gif[/img] All it takes is a jetting change and big kahuna's.
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If I remember right they came stock on early 80"s yamahas and then hit the aftermarket. I had a DG boost bottle on my '82 CR 480. No hp gain, but it did look cool hanging where the radiators would have been if it water cooled.

 

Now my banshee experience is somewhat limited compared to my 250R and raptor experience, but from what I remember the boost bottle was never supposed to, nor claimed to, increase HP. It was simply supposed to better throttle response and it seemed to make a positive impact on it. For the 30 bucks they cost I think many people are overly critical of them, especially since no one in their right mind expects a hp boost from them to begin with.

 

An even worse mod is a boost bottle on a blaster.

"Boost bottles fake out the engine into making it think the carb is closer to the transfer port outlet, when inlet pressure drops with a quick punch of the throttle it feels like an accelerator pump shot, so it doesn't add horsepower just some responsiveness to throttle movement at the lower throttle positions."

 

You all just need to use a real "boost" bottle. Mine holds about 2.5lbs. I'll try to get a pic up tommorrow.

 

lol nitros oxide that stuff makes me funny?

 

My friend got one for his blaster and he had no power gain and it rain worse then before.