JB4 Fuel Pressure Upgrade Kit for 2020+ BMW B58, S58, B48, Supra 718 Read our FAQ and install

Read our FAQ and install the guide below

Installing b58 catless downpipes will trigger a check engine light (CEL) due to the absence of OEM catalysts

The optional high quality Flow Matched Bosch® or IDX Port Fuel Injectors 42mm fuel injectors are offered in 550cc

Whether you’re cruising down the highway or off-roading

(1) Aluminum Lower charge pipe (turbo)

JB4 Fuel Pressure Upgrade Kit for 2020+ BMW B58, S58, B48, Supra 718 Read our FAQ and installFinally an upgrade kit that adds a high fuel pressure connection to the JB4 for B58 B48 Gen2 and S58 platforms allowing direct control of fuel pressure and fuel trims. Most useful for manual transmission vehicles or those running heavy E85 mixtures on a locked ECU. It's easy to install and includes a replacement JB4 board and a fuel pressure connector harness that attaches to your existing JB4 harness. Note this kit is not compatible with Gen1 B58