Why an airbox is more efficiant than an open filter.

This page will try to explain the sciences behind why the correct air box for a 2 stroke gives better power than an open “performance filterâ€Â

 

interesting imp:

u wrote all that yourself?

 

yup, i wrote it about 3 months ago but terro still hasn't put it in the guides section.

 

but if you get a open air filter set up properly sureley it will be better performance

 

ha ha :rofl:

 

Hence bell-mouths on race engines...

its also down to the internals to counter this 'back pressure' which is why you get oil/fuel mixture building up in your airbox/filter with standard carbs.

 

So is this where boost bottles come in? To remove reverse pulses?