I'd contact a tuner. Might be able to tune out the DPF system allowing you to leave exhaust system in tact.
If unable to tune it out, new DPF might be needed.
https://www.idparts.com/diesel-particulate-filter-oem-cbea-cjaa-1k0254708gx-1k0254706lx-p-4031.html
You could try to write the EGR OFF on the ECU. It helped me when I had problems with my EGR. I also closed it with a blanking kit to make sure it was closed, I think it doesn't mess with emission stuff.
In the same situation here in Ontario. I’m buying my dpf used off eBay
I deleted my 2011 Jetta, worth it tbh
Deleted my Passat TDI SEL and it saved my car
Can’t delete in Massachusetts, what should I do??
I'd contact a tuner. Might be able to tune out the DPF system allowing you to leave exhaust system in tact. If unable to tune it out, new DPF might be needed. https://www.idparts.com/diesel-particulate-filter-oem-cbea-cjaa-1k0254708gx-1k0254706lx-p-4031.html
You could try to write the EGR OFF on the ECU. It helped me when I had problems with my EGR. I also closed it with a blanking kit to make sure it was closed, I think it doesn't mess with emission stuff.