What's the big difference here?

[KKaWing]

I have the ramair hose, had it for over a year now. I did end up making a dimple at the 90* corner and creased the hose on the other side of the battery towards the front of the car. How? Because I was trying to secure my "joker" intake. First attempt was a hinge which ended up pulling the hose on to a plastic corner on the engine, causing a dimple. Second attempt was using a heatshield that had a cutout for the hose. The bare metal creased the hose abit. Neither blemish actually cut through the silicone or the reinforcement fibres. When installed on the stock airbox, there is no contact anywhere.