I have just done a 62 mile each way motorway trip.
It is one week since I had the LTB update on my car which has always had the 75/80 mph misfire / cough.
I can definitely confirm that the software update completely clears the problem and is well worth getting done if you experience the same symptoms.
Cheers
Mike. G reg 2.5VM Vogue Portofino red 1991- 1999
V reg 2.5td P38 Rioja red 1999- 2006
53 reg td6 Vogue Oslo blue 2006- 2015
11 reg 4.4 TdV8 Vogue SE. Baltic blue 2015- date.
https://www.fullfatrr.com/forum/topic56162...tty+affair
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