I'm not sure but I think you need to rig it to only come on at WOT. That is the only time it would make since to have it on anyway. As far as 2 of them, the only way it would benefit you is if the 1st one wasn't actually getting to it's max rpms and I don't see why it wouldn't. If it was, then the 2nd one is not going to make the 1st fan turn faster, it's already as fast as it goes.
If you had 2 that were different sizes and the small one kicked in 1st, you'd get small boost then bigger boost, but let's face it, why not go straight to the big. :rolleyes: And you'd have to have 2 sizes of intake pipes to have 2 sizes of eRams that somehow fit together and made sense.
I'd use one eram and then put the rest toward an exhaust. At least do part of it. You don't necesarily need to go all the way to the headers, but you could start at the back and work your way there eventually.
