does anyone know how to tell an sti inlet manifold from a wrx one?i know the sti doesnt have the tumble valves in it but how do you tell just by looking?

 

From my research earlier this year the STI ones do have TGVs, it is only the Spec C manifolds that don't. Apart from the crinkle red finish I don't believe there is any difference between an STI and WRX manifold.