There are actually both piggyback and flash tuning possibilities available for the N55 and the choice on which tune to operate is fully individual choice. We received’t include the intricacies of N55 tuning listed here, but Now we have composed focused N55 tuning guides about both BM3 and MHD N55 https://blogfreely.net/turbo55pro/aenwthaangkaarphathnaaaelakhyaaythurkicchdicchithalaihaekhngkhanaid-yaangyangyuuen