Well don’t remap your G29….that is if you want to preserve your warranty

B21 · Post by **B21** » Wed Nov 29, 2023 7:08 pm

Second visit to a Mini main dealer with the current saga affecting the EGR system on B47 diesel engines..

Eventually sometime later in 2024 maybe 2025 they all will be retrofitted with a revised version.

That’s irrelevant to this point…

Once you’ve had your B47/B48/B58 engine re-mapped..even if you reflash it with a brand new BMW supplied code it will always show it was re-mapped..forever..

1536Z4 · Post by **1536Z4** » Thu Nov 30, 2023 11:42 am

B21 wrote: ↑Wed Nov 29, 2023 7:08 pm re-mapped..forever..

That does surprise me as I would have thought that the official map would have overwritten it . You say if you re-flash it . I take it BMW supplied the official map but did you re-flash it or did they . There maybe something BMW do before overwriting it so that it shows it has previously been re-mapped to get out of any warranty issues ?

Phoenixboy · Post by **Phoenixboy** » Thu Nov 30, 2023 11:51 am

So i assume if you take out a warranty on a G29 and then get it remapped, it will invalidate the warranty?

B21 · Post by **B21** » Thu Nov 30, 2023 2:25 pm

1536Z4 wrote: ↑Thu Nov 30, 2023 11:42 am
B21 wrote: ↑Wed Nov 29, 2023 7:08 pm re-mapped..forever..
That does surprise me as I would have thought that the official map would have overwritten it . You say if you re-flash it . I take it BMW supplied the official map but did you re-flash it or did they . There maybe something BMW do before overwriting it so that it shows it has previously been re-mapped to get out of any warranty issues ?

On later engines such as the B47/B48/B58 an irreversible flag is set..unless the re-writes were ALL BMW writes..

On earlier cars there’s a minor bit of forensic work plus what is known as shadow codes, some of which are permanently stored..

B21 · Post by **B21** » Thu Nov 30, 2023 2:27 pm

Phoenixboy wrote: ↑Thu Nov 30, 2023 11:51 am So i assume if you take out a warranty on a G29 and then get it remapped, it will invalidate the warranty?

Certainly if you had a power train issue you’d have a problem..various folks argue that for non powertrain issues the warranty should still hold..

I guess if you can afford to ride it out without a warranty then you could try your luck..

1536Z4 · Post by **1536Z4** » Thu Nov 30, 2023 7:05 pm

B21 wrote: ↑Thu Nov 30, 2023 2:25 pm On later engines such as the B47/B48/B58 an irreversible flag is set..unless the re-writes were ALL BMW writes..

On earlier cars there’s a minor bit of forensic work plus what is known as shadow codes, some of which are permanently stored..

Ok thanks for info

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