You can find both equally piggyback and flash tuning possibilities obtainable for the N55 and the decision on which tune to run is solely particular desire. We gained’t deal with the intricacies of N55 tuning listed here, but We've created committed N55 tuning guides about both equally BM3 and MHD https://www.houzz.com.sg/ideabooks/185374641/list/turbo55