From an engineering standpoint:
Given the fact that I dont know dimensions, nor do I know material used, and given fact that its a unibody, and forces are directed and distributed throughout the entire structure, it would be very difficult to say how profound an effect this would have on structural integrity ... But it WILL have an effect on structural integrity.
If you were to get into a front-end collision, you would be transferring the entire force throughout an area only 1/2 that originally designed. That would double all the stresses on the steel, and joints, and reinforcements causing failures. So, instead of a steel bar absorbing and distributing the impact, the force of the impact will be absorbed by 1/2 a crash bar, your radiator, your engine block and intake manifold. Just hope that it is a head-on collision, and not an offset collision.
But, without extensive modeling, thats debateable.
If it were me? I would weld in some gussets and fill in that box-frame that you cut through. Actually, if it were me, I wouldnt have done it to begin with. You dont need an intercooler that big. But in the meantime, it looks wicked bad-ass, and drive safe.
And from a Legal standpoint: If a bodyshop were to notice this modification after you were in a front end collision, any lawyer fresh out of lawschool could argue that you modified the safety of the vehicle, and that without proper state validation/verification/approval is not street legal, and does not deserve to be on the road. Thus, the accident should have never happened, and you are left with a ruined vehicle. But, thats only if lawyers get involved.