Suggestions for replacement BPV, 200 20V

[Eric Huppert]

So, the beauty of chipping the beast is that every weak link possible will
fail. (less than a week with the chips now) spent the last six months
sorting the car out, feel like I'm starting over!

Drove about 200 miles today. Of course as soon as I left home started
hearing a moaning noise(no, she worked today)that appeared at boost and
would diminish eventually. With my luck I started trying to guess worse case
scenario. (it can only get better from there, no?) I finally decided it was
the rear main seal. Lovely thing about driving, lots of time to become
paranoid!

No, the noise didn't get worse... but I can still hear it car has been shut
off for a half hour now!

So, question is.....Suggestions for an inexpensive replacement? Have seen
some different messages with different ideas, but will ask again. I'm a
little leery of replacing with a used stock as I could end up in the same
place with increased boost...

Thoughts, BTDT?

Eric