are you talking about this one
https://www.ebay.co.uk/itm/333969385...0AAOSwYntggAc~
BSR are an aftermarket tuning option AFAIK there are different levels it could be tuned to and it doesn't say what stage on the advert
looks tidy though doesn't it
74.2 mpg seems optimistic somehow even on the motorway? can that be real