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I don't know P-Tronic and never heard of them so find it hard to comment.
You need to be 100% that you know what you are dealing with when doing these things e.g.
- warranty of failure of parts affected by the piggy back - do they offer one?
- are these bespoke to the engine, what BMW diesel experience do they have?
- as the question on PH, Tyresmoke and other big forums
- call DMS and see what they offer
- also see what Superchips offer
If I was to ever get me car remapped or chipped, I would always goto the largest and most reputable company e.g. AC Schnitzer, DMS, Superchips and maybe even SSTT if it were easy for support.
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Arrived! 2022 X4M Competition, SPY + Black Merino
Gone: 2019 X3M Competition, Toronto Red, Adelaide Grey.
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