Just mapping the DPF out of the ecu if its still connected would produce the same amount of particulate, the DPF would still catch the same amount of particulate, except when it gets full, it won't know it's full, so the ecu won't add extra fuel to increase combustion temperature to burn off the excess soot in the DPF. Relying on a passive regen wouldn't work either. So what you'd be left with is a DPF that is filling up at the same rate as a car that knows it's got a DPF but without the ECU intervening when soot levels get too high.
So instead of a DPF light coming on, I'd imagine you'd have a turbo related issue or unable to start the car when the engine is literally choking on its own fumes when they just blowback from the DPF that will eventually get 100% clogged up.
This is only my personal opinion, I'm no mechanic.
Edited by DazTheMe, 21 December 2018 - 10:07 AM.