Theres been alot of talk about Mild steel exhausts vs Stainless steel exhuasts sound wise, with lots of people saying mild sounds better? whats is the reason behind this? Soon I will be purchasing a X-force exhaust system 4inch dump, 5inch cat then 3.5 to the rear all bits stainless steel, however the same exhuast is avalible in mild steel and it is a little cheaper. What are the benefits of Stainless over mild steel and vice versa? also with the exhaust mentioned above what would its max flow rate be Id say mid 400rwkw? Thanks guys