The JB4 for BMW N63, N63R and N63TU V8 engines delivers real-world gains: up to 100hp and 140lb ft torque at the wheels on stock setups, dyno-verified.
Plug-and-play fit - no ECU flash, works with locked ECUs and all factory driving modes
Bluetooth tuning via JB4PRO app: adjust maps, log 40+ parameters, gear-based boost control, fault code read/clear
E85-ready with preloaded ethanol maps for safe, flexible fuelling
Not VIN-locked - remove cleanly, resell later; backed by 5-year warranty
