Induction panel air filter

What benefit would i get out of changing my panel filter in my 1.3 Lx Automatic ? Or is it just worth keeping my standard one, as in an auto gearbox the engine climbs without the sound of gears changing.
 
Nothing really in the scheme of things unless it's completely blocked.
Was thinking of something along the lines of an induction setup but with the filter instead of a cone. But if its not going to make a whole lot of difference performance wise should i just stay with a stock filter.
 
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