Quote:
Originally Posted by flatheadmurre
K&N atleast used to have a selector where you punched in your measurements and got a suggestion for a filter...
And their filters are as good as it gets...
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Perhaps too good. I bought a K&N replacement filter for the 327/350 in my Corvette. The engine developed an occasional "hiccup" going down the road. Put the stock filter back on; no "hiccup". Looked both filters over carefully to see if there might be some other factor causing this and couldn't find anything. Put the k&N back on - "hiccup", "hiccup".
I'm now running the stock filter. The only thing I can think of is that, because of it's superior filtration, total flow is reduced to the point of affecting engine performance.
My advice on this would be is to get the largest possible dry filter that you can cram into the original housing. We all know about those little "helmet" thingies being a problem.