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      04-21-2022, 02:51 AM   #106
Joe-BMW33
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Drives: '18 M550i|'21 X5|'03 540i
Join Date: Apr 2021
Location: Boston

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2013 VW Tiguan  [0.00]
2015 Infiniti QX60  [0.00]
2021 BMW X5  [0.00]
2003 BMW 540i  [0.00]
2018 BMW M550  [10.00]
Quote:
Originally Posted by PPMKING View Post
Piggybacks are marketed as untraceable, but we're being naive or in denial if we think BMW doesn't data log the car operations regardless if stock parameters were changed or not. It comes across like BMW is not aware of piggybacks lol. Would they pull data logs? As mentioned earlier, probably depends on what the repair is. Injectors, sensors, fuel pump? Probably be fixed no issues. Engine replacement? I would think so. Why would anyone logically think BMW would just pay $30k without pulling data logs to determine the engine failure? Increased boost, timing - easy for BMW to point to a tune.

That being said, piggyback tunes, including Dinan are not known to cause major engine failure based on anecdotal evidence from forums.
I guess the million dollar question is what are these data logs and where do they reside and what do they contain? You'd think this question would be simple enough to answer or for the piggy back manufacturer to figure out.
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2018 M550ix|Carbon Black|Dinan Modifications|2003 540i|Jet Black|M-Sport|2021 X5 Mineral White
Prior BMW's: 1987 325e|1993 740i|1998 740il|2001 530i|2002 745li|2007 750li|2006 750li|2001 530i|2012 535xi|
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