Ok Guys........I have an 03 Evo..15k and my friend just bought an 05, I have kept mine completely stock and we were wondring. Would an MR blow off vavle be a good choice as an add on bc I'm not going nuts I want to keep my car pretty much stock...mabey upgrade my exhaust, and intake systems....mabey yall could give some ideas (arc intake box i have heard is awsome)...but please help. I need to know if all that would be worth it and if it would affect my cars reliability