I have a 2007 Civic Si that I bought used years ago with a Fujita short ram intake installed. Apparently the company no longer has a website. My last two UOA have hinted that I need better air filtration (check em out yourself if you want). I am open to any advice (related to the k20 engine or not) about the best replacement. I would prefer to just replace the cone filter only but am not opposed to spending a little cash on a shiny new intake for the car. I just want to prioritize filtration over performance for now. I do not have the stock air plumbing as the car didn't come with it. I believe the current intake piping is 3" and will confirm this tomorrow after work.