B58 Gen 1 (Tuning)
Tuning verified for the B58 Gen 1: JB4 piggyback tuners, MHD and bootmod3 flash tuning. Fits the 2016-2019 F-chassis 340i/440i, M240i, early 540i, 740i and X3 M40i; every product page lists the exact chassis and years.
Tuning verified for the B58 Gen 1: JB4 piggyback tuners, MHD and bootmod3 flash tuning. Fits the 2016-2019 F-chassis 340i/440i, M240i, early 540i, 740i and X3 M40i; every product page lists the exact chassis and years.
