Is the Zippers air filters as good as the K&N air filters
The zippers air filter Is around $36.00 where as the K&N filters
are around $55.00. So is there $20.00 diferance between the
two as far as engine protection is concerned? My SE filter isn't
doing its job very well so it has got to go

 

Zipper's air filter if you want more airflow.
The Zipper's filter is 1/2" taller than the stock/SE/K&N. PN#1011-0782 thru Drag Specialties dealers.
But you need the SE backplate to run it.(which I assume you have).
Also If you go to Zipper site they Offer K&N's as replacement filters.
(so to my thinking K&N must make the Zipper filter. I maybe wrong but it's MO)

 

If you really wanna move some air. Hillside has some air filters they have made for them by Green Filter. About 30% bigger than the zippers element.