I fixed the radiator hose... Again! This time for good. Re filled the system and bled.
I pulled apart all the factory electrical connectors and soldered new pins.
I turned to boost down to 12psi. Seems like the sweet spot until I can get it tuned on the dyno.
I drove it for 30+ miles in 98° weather without any issues...
Engine temps stayed around 180° all day.
Went to VW to get a boost/thrust sensor (MAP). they wanted $200 so I bought one online for less than half. I often get an "implausible signal" and go into limp mode. This is partially why the boost is turned down. My tuner needs to re-scale the sensor.
Limp mode sucks! The car go to idle, no throttle at all until I cycle the ignition.