Volkswagen (VW) BMS JB1 to JB4 Upgrade Kit Type:RHD REV1 Doc Vu’s B58 tune is

Doc Vu’s B58 tune is a premium solution for those seeking a bespoke

your intercooler pressure drop is reduced

The Precision Raceworks N55/S55 Upgraded DI Injectors are designed for customers looking to push the limits without port injection (or in addition to port injection)

Thin-walled deep 16mm specialty socket

• ARM Competition FMIC

Volkswagen (VW) BMS JB1 to JB4 Upgrade Kit Type:RHD REV1 Doc Vu’s B58 tune isUpgrades your existing BMS Stage1 to an EA888 JB4 system. The JB4 features CANbus connectivity for more advanced tuning, direct AFR control, advanced safety systems for boost, air fuel ratio, fuel trims, engine knock, boost mapping by gear for improved traction, integrated water meth control, and much more. The upgrade kit cost is $175 outright. There is no longer a core exchange program available. After the upgrade, you can keep your old Stage1 board