didnt bother readin through the 10 pages so sorry if someone already asked. But what fram filters are you guys having problems with. The only problem ive ever seen is my uncle stuck a short extra guard on his 555 just to start it up for a quick break in so he didnt have to put a big dent in his headers. But long story short it basically imploded the inside of the filter and crushed it like a soda can. But i've never seen or heard any problems about the HP filters. Used them for years and know hundreds of people that use them.