Hi everyone!
I need some help with making a decision on a straight through exhaust size for my FWD mazda 323. Im going to buy an engine 1.8L DOHC NASP 135ps @ 7000rpm and 16.0 kg*m (156.91 N*m) / 4500 rpm ..to put in my car. but before i do.. Im going to get/grind a fast road cam with a duration...