Do you still have the DP installed? Dealerships always rack a car to check for other concerns and possible issues related to the customers complaint. If they see that and the tech performing the diag is not one to let modded parts slip, he might try and push that. Otherwise, you may be ok.
If you are having VVT noise issues, it would only be at start up. If you here noises while driving and at any time there after, its most likely the Tensioner. It took me a good while with the help of another long time tech with a stethoscope to write off the VVT and find the tensioner making noise (Cloesly related to the same noise location believe it or not).
Its possible your Timing Chain tensioner has worked its way loose a click or two if it was damaged somehow, but even then, that would be stretching that possibility. Otherwise, theres nothing else to make noise. And as far as ive seen or know, Ive yet to see a TSB on the Timing chain.
As for me, I just picked up my first mod for my Speed 3. Bought a CorkSport rear motor mount insert. Ile throw it in tomorrow. With the use of a rack at work, should be in in 5 minutes flat.