The JB Plus is a quick and simple way to add HP with minimal cost and minimal install effort. Something that anyone can buy, install in under a minute, and really feel from the driver's seat.
B38/B46/B48/B58 JB Plus Quick Install Tuner
JB Plus N20/N55 Quick Install Tuner
Cooper S N18 JB Plus
N54 JB Plus Quick Install Tuner
JB Diesel Tuner (JBD)
JB+ Tuner for Mercedes-Benz 2011-2017 W204 SLK 250, C250 and E250