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      10-15-2018, 11:50 AM   #14
Zippee
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Drives: BMW M4 CP SMB
Join Date: Jul 2018
Location: UK

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Quote:
Originally Posted by Nigelo View Post
The gpf sensor seems to detect a build up of back pressure, rather than a differential as there is only one sensor per downpipe and nothing downstream. Once the back pressure builds to a certain level, the exhaust valves get shut and a high egt fuelling strategy comes into play to burn off the particulates.
Ah ha, excellent info thanks. That could be a bit trickier to fool or bypass then. I'd assume someone somewhere may need to write a new map to take this in to account (OpenFlash, BM3).
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