I appreciate the response. I am by no means an expert with tuning but how do we the end user know that our fuel pump is keeping up with the demands of a Stage 1 tune?
I apologize in advance if this sounds like a stupid question but from experience tuning my MS3, the fuel pump was the weak link with OTS tunes. The COBB AP was there for one to monitor this straight from the ECU which including datalogging to make sure you had a safe tune.
No tuner on the planet would be in business long if they produced an unsafe tune. A stage 1 tune from everyone is going to work within the factory safety parameters, you don't stay in business blowing things up.
If your fuel pressure wasn't keeping up the car would pull back power to stock or even below stock if need be. This would happen well before you could even detect there was a problem.
The fuel pump in the MS3 is the same one used in the early 2.0T applications and it had the same issues with keeping up with demand of a stage 1 tune that was a little to aggressive in the low rpms, so tuners detuned the vehicles to work around it. If the tune was a little too demanding there was a very noticeable drop in power as the car would shut itself down to keep things safe.
You can log all the info you want with VCDS before and after the flash if you want, you don't need actual gauges they are not worth the investment for daily use.