you still have overboost by a few hundred mbar
try to recreate a graph similar to mine
just revs ,act boost, desired boost , and vnt% slowlt rev to 2000 and back
also id be interested to see a graph similar to one I posted of
https://www.fiatforum.com/attachment.php?attachmentid=127805&d=1386875882
desired maf, actual maf , egr solenoid% you will need to log a few minutes to see egr go through a cycle or 2 just let it idle
vnt is just 'variable nozzle turbo' or similar meaning internal vanes help to spool more boost or relieve excess boost regardless of engine revs to some degree.
when you say was ok driving there but broke on way back what do you mean by broke?
low power , stuttering, or eml light?
looking more closely at this graph you have one spot with underboost ive circled red
for how long it would take id still try blanking egr.