The tuner installs between your car s sensors and it s ecu computer and manipulates how the car runs via these connections.
Jb4 2 step automatic.
We recommend it as the starting place for all those new to modifying their car and those who plan to continue.
Allows your jb4 to 2step the n54 engine cycle power to the coils to build boost when not under load.
Jb4 bmw 1 series n54 e81 e82 e87 e88 1m.
N54 jb4 features and benefits n54 power gains of up to 100hp and 100tq to the wheels on a stock vehicle improves 0 60 times and 1 4 mile times the jb4 offers a lot more performance functionality and safety than your average performance chip quick plug play installation.
The jb4 is a plug and play tune for your turbocharged bmw.
Seems like we messed up in the wiring.
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We ve been pioneering plug play performance tuning intakes and mods since 2007.
We install the jb4 anti lag and 2 step into the 335i so it can shoot some massive flames.
That s why it wasn t wo.