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Thanks mate.
I don't have the right tools to look at it but I am taking it to someone to have a look.
The pervious owner had blocked the O2 sensors so likely the lights will not come on.
I contacted bmw dealer and they said they will get back to me what sort of software update it is, they said if it is only idrive update, then it should not affect tune.
I had the remove open pod filter which the guy had installed before as it is illegal here and had to change the resonator to bring the noise under 90db.
Also, with tuning does that affect the longevity of the engine and car or it does not affect and remains same ?
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