JB4 for BMW GEN1 & GEN2 B58 vw-golf-r-mk7-2019-2021-esr6912127 Each cap is CNC machined

Each cap is CNC machined in the USA from a solid block of billet aluminum

🔧 Easy 5 min install

and heat shield remain fully functional

Repeat on the other side

Bluetooth ECA can be purchased with our without any harness you may need as we now have a variety of harnesses and extensions to choose from

JB4 for BMW GEN1 & GEN2 B58 vw-golf-r-mk7-2019-2021-esr6912127 Each cap is CNC machinedPower gains of up to 120HP & 120TQ to the wheel on a stock B58 without the risks of flashing! The JB4 B58 tuner from Burger Motorsports is the most advanced plug & play tuning system available for BMW B58 turbocharged engines. Power gains of up to 120 horsepower and 120 lb ft torque at the wheels are possible on a completely stock B58 engine running pump gas. Vehicles equipped with bolt on upgrades, higher octane fuel, E85 mixtures, or larger