Any one have some experience with these? I would like to get some feed back. I am currently running k7's but they are only rated to 3000psi. The cat is good to 4000 which is what my udors push.
Get rid of the k7, the cat is the way to go. I have a five gallon bucket of wore out k7s from last year. I switched to the cats and have had zero problems. I really do think the extra 1000 psi makes all the difference.
Everywhere I see shows K-7's are good for up to 3,500 psi, which is what I run mine at. I get a year out of each one. Who sells the Cat unloaders? I would try one.