[NorCalCRF250x]

So whats the difference with that boysen quickshot cover? Its just a cover so what did they change the size of it or something?

[04 crf450]

all it does is accelerates the fuel flow in your carb which gives you better throttle response.

[NorCalCRF250x]

How does it do that though whats so special about the design of the bowl for the boysen one compared to the standard honda one.

[Asmith]

How does it do that though whats so special about the design of the bowl for the boysen one compared to the standard honda one.

The AP cover forms a reservoir for the AP to squirt fuel into the engine. The Boyesen has larger channels so that the reservoir refills faster than stock.

When pumping the throttle like a two stroke, the stock cover can actually run out of fuel on successive throttle twists. This can cause the engine to stumble or bog.

If you don't pump the throttle like a two stroke, you probably wouldn't notice the benefits of the Boyesen cover.

[NorCalCRF250x]

gotcha thanks agent