S58 JB4 Tuner for 2021+ BMW G80 M3, G82 G83 M4 s58

S58 JB4 Tuner for 2021+ BMW G80 M3, G82 G83 M4 s58Gains are 80whp 100wtq on pump gas and up to 150whp 175tq on higher octane or E85 mixtures. The ultimate tune for your S58 powered G87 M2, G80 M3, or G82 M4, the JB4 allows you to go from factory stock to full race and everywhere in between. The JB4 installs and removes easily and includes many unique features not found in any other tune, including user adjustable 1st and 2nd gear boost limiting, smartphone integration, electronic wastegate control,

the Race version is quite a bit louder than the street version is best suitable for track use

Allow a true flexfuel conversion (MOTIV N54 hardware flexfuel kit required)

• 25% larger than stock

Adds 18+ HP to the wheels & 30+ TQ to the wheels

vehicle condition

• 2015-2019 F20/F21 B58 BMW M140i

Coil overs are also more useful when larger wheels/tires are used because you can precisely set the ride heights to clear the new tires

• The JB4 offers a lot more performance

leak free experience

But why stop there

5mm) valve

Utilizes Factory Strut Mounts