2013 Kia Forte - More work needed?

I just had my 2013 Kia Forte engine replaced and when I picked it up from the dealership it was making a noise when I hit the gas pedal. I took it back and they said I need a new intake manifold. Why would this noise start after the engine was replaced if it was the intake manifold? Also, if I point the car in park and press the gas there is No noise. Could this really be the intake manifold? It almost sounds like something wasn’t tightened up properly.

I’m with you, I think it is something else, but only the mechanics working on the car can tell for sure.

Making a noise? After the long block was replaced? Well, it could be many things. A wind whistle from a big vacuum leak? You need to elaborate on this noise? Can you get more specific?