Wirelessly connect the JB4 to your Bluetooth 4.0 compatible iOS and Android device via the JB4 Mobile connect kit, or to your Windows laptop with the BMS data cable. Both options allow you to record and analyze vehicle and tuning data, change JB4 performance maps, and update firmware.
From simple Stage 1 plug-and-play units offering quick horsepower gains to Stage 3 JB4 units for N54, N55, N20, N26, N63 engines. JB4 has proven time and time again to be the safest and easiest way to extract the true potential from your BMW turbo. JB1 applications : BMW (N55) 135i, M135i, M235i, 335i, 435i, 640i, X1, X3, X5, X6, X4 M40i
As JB4 tuning is coming with optional map switching, Map 1: 4psi over stock boost Map 2: 6psi over stock boost . Result: ️ Stock car : 227.40WHP / 326.67 Torque (with BMC filter ↗️ JB4 map 1 with Downpipe: 247.75WHP/ 345.31 Torque ⬆️ JB4 map 2 with Downpipe: 266.27 WHP/ 378.82 Torque 🔝 Total increase : 38.87WHP (50BHP) & 52.15 ...
Mar 12, 2020 · B58 JB4 + MHD Back-End Flash. For ultimate B58 tuning, we recommend stacking the JB4 and an MHD back-end flash tune. The B58 JB4 comes with, in our opinion, superior features and better boost control. It also allows for on-the-fly map changes in just seconds. No need to completely re-flash the DME. However, the JB4 is limited by ...
For the enthusiast hunting for big power out of their B58, Pure Turbos has the answer with their Stage 2 turbocharger upgrade. In 2016, they made 481whp and 437wtq with only an intake, JB4, and meth on regular 93 pump gas. 86uk » Thu Jan 23, 2020 9:58 pm I bought the NGK plugs a few weeks ago and didn’t realise there was a B58TU version plug.
JB4_B58 is CARB Approved Under Executive Order (EO) No. Both options allow you to record and analyze vehicle and tuning data, change JB4 performance maps, and update JB4 firmware as we release free newer versions with updates, more The JB4 is the most advanced and highly featured tuning system available for your B58 and B48 vehicle.
Map 2 will target approx 14psi, map 5 will target between 11-17psi based on octane and conditions so run some logs and see which one looks better. Map 5 is probably the safer option but based on your mods I cant see why you couldn't run map 2. I always felt that map 2 pulled harder than map 5 on my old N54.