I used a CAN tool that I left plugged into the OBD port to automatically clear codes every time I started the car. I ran for over a year with the EGR blocked and the DPF in place. Just spitballing here, but it might have to do with how the tune is done. He does a LOT of maps in the UK and worldwide so I'm surprised that he hasn't warned against such an issue.ĭoes anybody know if DPF regen relies on a fully functioning EGR valve on our cars? However, another reputable tuner did not mention that this would be an issue and when I asked him about it, he said that he hasn't had any issues on the ones that he has already done. The EGR Valve should NOT be removed on vehicles that still have the DPF Filter in place, doing so may block the DPF as the EGR Valve operation is a prerequisite for DPF Regeneration. However, one good mapper brought it to my attention that deleting the EGR isn't a good idea if retaining the DPF, and having done some research (but not finding very much info) I found it written that this is in fact true: Hi guys, getting some mixed info from my research, I wanted to get a remap done and have the EGR disabled in the software in my 330d LCI N57.
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