This is to everyone out there... I have a 2005 mazda 6i 4 cylinder and I wanted to know what would you recommend for as an intake, exhaust, headers, and a blow off valve?

check the sites sponsers for some help, but my suggestion

Intake: Injen
Exhaust: Racing Beat
Headers: Draxas
BOV: HKS super sequential (but everybody and there grandma has those)

i assume your 6 is going to be turbocharged since your looking for a blowoff valve?