I put a small boost gauge in my 2.4L 115ps while troubleshooting a problem (burst intercooler) and the reading under load was 15psi or 1bar. Wastegate seems to be working OK, and new intercooler is fine so far, so I assume this is normal. I pressure tested the second hand intercooler to 15psi before buying it, and it didn't leak.
I'm guessing the 90ps will run around half as much pressure, and I've heard the 75PS has no turbo. But I'm curious what turbo pressures the more powerful (140ps) transits are running? And how high do people go when "van tuning" or is that all done via fuel map changes?