:yeahthat: I have an Import Tuner magazine that has the pros and cons of the breathers and it said that breathers rob you of power. A catchcan actually gives you power...are you talking about the filter you can put on the valve cover?I would'nt do it if I was you,it'd be better to just get a catchcan.
Catch method will still connect the engine to the intake, unlike the breather method.. Have you seen the one where they use marbles in the catch can DIY?Thats what the dyno said in the mag article. Might have to do with less oil/sludge getting into the IM. I know I'm skepticle too, but seeing all the crap my cheap DIY catch can has caught, I'm glad I have it.