DPF delete without tune?

[Trainpilot]

I am hoping for some insight and advice from my fellow X5 diesel enthusiasts. Is it possible to delete the dpf with a delete pipe and fool the computer somehow into thinking a new dpf was installed. Can I spoof the differential backpressure sensor somehow? I'd like to avoid a costly, inconvenient tune for the time being. 200k miles on '09. DPF was clogged according to message and car was limped into garage. Delete pipe on the way. My hands are still sore from the removal and I can't bear the thought of trying to install a new or cleaned dpf. I'm better with nuts and bolts than bits and bytes. TIA

[DialedIn]

You can't make physical changes to how the engine works without letting the engine management system know.

[jbash87]

What Dialedin said. You can reach out to one of the tuners and let them know that this is for offroad purposes only. They can probably help you out, but at this point the hard part is already out of the way and might as well go for it... Except that you're in California.

[Trainpilot]

I figure I'm not really changing the way the engine operates, just reducing exhaust backpressure through the DPF section of the system. The delete pipe has a connection for tubing which could be hooked up to the higher pressure (upstream) side of the differential exhaust pressure sensor. This is, in my understanding, what tells the engine management system that the DPF needs regeneration or is clogged. The other sensors will go back in. I'll try just leaving the lower pressure connection to the differential sensor open to atmosphere. Low pressure EGR will obviously cease to function. I'm hoping that, by itself, will not cause limp mode. I guess it all just depends on how sophisticated the management system really is, as to whether or not the computer will recognize the difference between a "phantom DPF" that always has optimal pressure differential, or one that cycles through regenerations normally. I feel like I know just enough to be dangerous here, but I am curious as to what will occur. And yes, being in California does make things more difficult. I am lucky to live in a county that doesn't have biennial emissions testing. Hopefully the air quality police are not monitoring my posts.