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Actually you could remove the DPF and Urea injection if someone figures out an engine coding or external tuner that could remove the error codes associated with removing those items (of course that will void your warranty but I imagine some people don't care). It is very common with new diesel trucks (albeit illegal but impossible to enforce) where owners will take out the DPF and/or eliminate urea injection with a new engine coding. So far I haven't heard of a similar coding for the 335d US spec car though. Perhaps I'm wrong have any tuners managed to do any of the following on US spec diesel cars or SUVs?
1. delete the DPF with a straight pipe
2. eliminate/disable urea injection
3. bypass/delete the egr system
4. replace the swirl flaps with fixed plates
5. do any of the above and code to eliminate errors/check engine lights?
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