awesome write up. i am more of a lurker but i originally joined this forum so i could ask the same questions about filters and after, pardon the pun, filtering through all the bs, i ended up with a rottweiler system and am over the moon about it. one of the best mods i have found by far. install took a few hours at my skill level which is low but ultimately pretty straightforward and cpr does a great job with the support. a++ in my book all the way around. looking forward to new stuff from them.