Well I've been thinking about it hard and long for over a year now, and I've decided that this summer I'm gonna try to build and boost my 2008 auto mazda 3 2.3. Now I know it will be tons of work, and the fact that it's an auto makes it even crazier, but I know its possible. Lets be realistic, what should I focus on first. I know I want to build my engine so that I can seriously boost it to 300-550whp. Somewhere in that range.