After reading this thread I'll throw in my .02, I have a 680hp drag civic and a catch can is an absolute must for a high hp turbo motor for a number of reasons. You think $300 is expensive? T1 Race Development sells a catch can setup for Honda/Acura that's $575, and its the best money can buy, even the knock off versions of his setup are around $375. I think this setup looks quality and is priced well based on the level of craftsmanship and bolt in functionality