- Jb4 n63 install. N63TU BCM connections should only be attached after confirming a basic installation if JB4 logs indicate a potential tuning benefit. Made in the USA. The JB4 tune is loaded with awesome features and adds up to 100whp and 140wtq. Optional connections for additional sensors and a mobile device adapter are also described. The JB4 comes preloaded with custom tuning software and up to 8 maps for various fuel and modification levels. Burger Motorsports JB4 - N63/N63TU JB4 - F Series N63 TYPE_A is backordered and will ship as soon as it is back in stock. Mar 5, 2020 ยท 6. JB4 is a plug & play chip tune for turbocharged vehicles. The JB4 installs between your car's sensor and its DME/ECU (computer) and manipulates vehicle performance through these connections. . y4unqyn bpqig cc eu kvj o4rx jzfmsn im3xqe 6codu 97w4
