swap turbo with a 2000 1.8T passat, any issues???

I have a 99.0 A4 1.8t that is lacking power, I think I've narrowed it down to the turbo. I also have a 2000 Passat 1.8T right next to it in the garage. Any issues with swapping the turbos?
I'm in the US...
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What kind of power loss are you experiencing? Also, it comes to mind that you should have your turbo VAG-COMed in case it's one of those naughty diverter valves or Magnetventils. Then again make sure all the plumbing and especially the turbo intake pipe-manifold are OK.
If it's the turbo that's gone to pot, you might hear some loud hissing at irregular intervals when it's under load. I would suggest listening for that on both the Folks and the Audi with windows down, radio and vent off in a quiet, preferably narrow street uphill with walls on both sides that would echo and amplify the sound they make in second or third gear.
My two sounds, I mean cents,
JP

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