Vibration in drivers door seems to be coming from plastic plate on armrest.

I was checking vaccuum hoses for leaks and tigh fits when I accidently broke a line that goes into the air intake just before it goes into the turbo. It is a hard plastic line that goes into an 'L' shaped boot that attaches to the intake.
The hard plastic line just popped back towards the front of the engine and I can't locate it and since I don't know where it goes I can't trace the line any help would be great?

Just for note on the T5R vs. R, there were 2500 T5R's shipped to the US, most black or red with under 500 being yellow and just over 200 being manual. These are the most valuable, then comes red manuals with just over 400 and blacks with around 550. 96R where just over 3000, don't know the breakdown on these or 97R's which were 3400 sent here. This does not include Canadian numbers and have never heard of where you can get these numbers. If you want to check out my facts, go to a dealer's service dept. and they can tell you the numbers.