Problems with an explore admission system

Good I have a 98 explorer and has problems in the admission system, is it a repaired engine, I don't know if the system is original, could anyone send me the diagram of this system? Or give me help? thank you

Hello Ignacio.
What kind of problem do you have with the system? If there is any modification it must be outside the engine because a reform is internally difficult. It would be very good if you expand a little giving us the symptoms of the problem.
Miguel

Good, if the modifications are on the outside, try to explain to me, what happens is that I do not know the pieces, of the thick hose that comes from the air filter of the explorer, two thinner tubes come out, one passes x on top of the alternator, enters below MAF (I think so it is called) and connects to something that I think is a purifying filter, in my truck that connection had a t of my connection. It connected the tube that I say, the other enters the filter and the other mouth was connected to a plastic tube that was going on the injectors, but that tube when I saw it that it is sealed at the other end. The truck turns on, but when you accelerate, and it does not regulate. And it makes some explosions. I would like to know how the admission system is originally. thank you.