I just got my 6637, how long should I expect this to last, I drive dirt roads once in a while?

 

Twice as long as your stock filter....just rotate it 180 every once and a while.

 

and with the homemade pre filter or "pop" mod I think its called, I can expect it to last even longer?

 

I ran one with no prefilter for about 40k and the restriction gauge I installed in the end of it hardly moved. It was pretty grey looking but didnt have a problem. If there was a way to test it, I bet that filter would last 70k+ miles. the surface area is absolutely huge.!

 

With no prefiler would'nt the turbo burp blow the dust off?

 

hmm thats a good point

 

I had one in for a year.

 

20000 on mine and still flows good. I figured I will change mine once a year.