If you want a boost gauge so you can fast and furious your way down the streets then go with some cheap POS from pep boys or spend $$$$$ on some crazy stuff from speed shops, there all the same crap. Auber gauges are king and actually have useful applications with built in relays.
All of this is pointless honestly for what you want. You will not be able to do anything worthwhile aka goo useful info from just a boost gauge.
You want what Flee mentioned, VCDS (free Software) and a VAG-COM cable (about $150 used on ebay, and a laptop any cheap one will do. as long as it runs windows and has a USB port. CHeck out
Ross-Tech, LLC
Run the software and do some logging. Post the logs here and we can diagnose what’s causing the eradication of your boost. Is it a fueling issue? Possibly. Is it a turbo issue? Maybe. A boost gauge will not tell you anything you need to know and it can’t give you accurate information you can take to the bank. What are you going to do? Drive really hard and write down the RPM's and PSI every 1/10 of a second?
