Update! EPL stage 1 chip, DSM Recirc'd DV, and Prosport boost gauge installed!
A few weeks back I went to vegas, and while I as out of town I let Tony @ EPL (European Performance Labs) throw their stage 1 flash on the car. I did before/after logs with Jordan at CPS here in MN and we saw boost rise from ~13 up to 18 peak, clean up the AFR, and timing looking strong. I was impressed, but something was not quite right.
I decided to ditch the stock DV, as everything I see about it makes me want to cry. I took the car apart and removed the noise box from under the dash and used the main portion of the hose to plumb in a BOV from a 1997 Mitsubishi Eclipse GSX. I had originally planned on using one out of my evo, but this one held 20psi just fine, so it will stay for now.
Next, block off OEM DV with ATP's plug:
(this same 'kit' is available with a Forge valve for $300!!! YEOW!)
Prosport Boost Gauge w/ NewSouth Performance gaugepod:

I read the how-to on this, and yes you gotta remove the battery, but NO, you do NOT have to remove all of the crap from under the steering column. Just extend the wheel all the way out and down, pop off the one little cover, cut a small hole in the leather, and from there you can easily run power, ground, and the tube up to the top of the steering column.
Plumbing is nice and clean thanks to the factory wiring tunnel thingy:
$10 in parts to get manifold pressure to the BOV/DV and boost gauge:
The car feels like it actually has some power now

We logged again and N75 Duty cycle is much lower, meaning the turbo is working less to provide boost, leading to cooler intake temps (not much though due to the stupid factory intercooler setup

). Boost is also higher, peaking around 19. This says a lot, the skirt on the stock DV was in good shape, but it was obviously leaking while under power somehow.
Up next, ebay catless downpipe!
Here's the link to the DIY I wrote on doing this BOV setup:
http://www.golfmkv.com/forums/showthread.php?t=60503
Hrm, could this be the car for name dat powa?