So you still have the stock radiator?i ran into the same problem. i have an ekk20 with the ekk1 mounts also. when i installed my rbc, my iacv was interfering with my radiator and my fan. with the fan, i flipped it and now it blows air through my radiator. but that still didnt fix the problem. with the iacv, my friend gave me a modified harness (which is hard to explain), but i will try to take a picture of my setup and post it up in which it will give you a better/much clearer picture.
my friend purchased the harness from here, so if anyone knows of what i'm talking about, please feel free to chime in.