I just bought a MR2. I've always wanted to own one. So I went ahead and changed the oil/filter real quick. When I was about to change the air filter I noticed the tube that supposed to be routed around the box is NOT there. Does anyone knows what's the purpose of those line tubes? I was thinking maybe someone had re-routed it. If anyone can help to identify the tube so I can search for it that would be great. Thanks.