zip tie mod, what is it?
Do the search and you will find many posts alluding to this simple mod.

The Best of Corvette for Corvette Enthusiasts
Also, regarding the K&N mentioned earlier, an individual did an independent test on his Miata and has shown that the K&N doesn't filter as well as a good paper filter does. He also found that the pressure drop difference between a K&N and a paper filter isn't that great, i.e. the HP gains can't be that great. Check it out at www.bobistheoilguy.com. Interesting read at least.
My Donaldson filter may be just as bad as the K&N, but it IS a different type of filter material and the company makes all sorts of air filtration products. Far more than K&N. My advice.....get a modified airbox cover with a paper filter or, better yet, a quality cold air intake, Blackwing being the minimum based on surface area, design, company experience, and ease of installation. Just MHO.















