Ready to take your BMW twin turbo to the next level?
 
How does an additional 80hp and 80tq to the wheels on an otherwise stock car on pump gas sound? How about up to 180hp and 155tq to the wheels on a fully modified car on race gas?

The factory 135i, 335i, 535i, X6 and Z4 35i ECU comes detuned from the factory and the full potential of the N54 twin turbo engine is inaccessible. That has all changed with the introduction of the BMS JB3 processor.  The JB3 is the latest generation of the Juice Box Performance Tuner and it features completely new microcontroller based hardware, numerous input/output channels, and integrated safety features. Also, the 1.3 version improvements include crank position for full 4D engine mapping, air intake temperature for on the fly thermal loading adjustments, direct solenoid control for precise spike free boost control, throttle input for factory like drivability, and fuel pressure control for diagnostic invisibility. Basically, the JB3 provides safe, reliable increase in horsepower and torque.

The JB3 does not require complicated external power or ground taps which can leave tell tale signs of modification or trigger detection codes, making it the only true plug and play N54 system available. And the JB3 box and harness are designed to fit discretely in the  ECU compartment with no visible signs of modification. The PNP includes color matched subconnectors and does not require counting/extracting ECU pins. Installation takes only 15-20 minutes.

With over 15 unique maps to choose from (stock maps to race maps), this is the only performance software you will ever need for your N54 equipped BMW.  Moreover, map changes can be made while seated in the driving seat!  Whether your vehicle has an intake or is fully modified, the JB3 will adjust to the modification and make the most out of it. Also, users can now switch maps or disable the JB3 from the drivers seat! All without the hassle of running wires inside the car or carrying around a manual remote control. 

All this and more makes the JB3 the #1 software choice for the fastest 1 series and 3 series in the world. When it comes to choosing the best performance software for your 135i, 335i, 535i, Z4 35i…only settle for the best : BMS JB3.

Benefits

• Gain over 80whp and 80wtq on pump gas; 180whp and 155wtq with race gas and bolt-ons
• Switch between 10 maps for every occasion; 15 maps with a modified JB3
• Change between maps right from the driver's seat
• Adapts to modifications (downpipes, intercooler, intakes, 100 octane, etc.)
• Invisible to BMW tuning detection software
• Installs within 30 minutes
• #1 software choice for the world's fastest 1 Series and 3 Series

Click here to see the fastest 335i 1/4 mile time using the JB3

Click here to see the fastest 135i 1/4 mile time using the JB3

Click here to watch the JB3 PnP Installation Guide

Dyno Charts:

Stock 135i, 91 octane

335i with downpipes and BMS intake, otherwise stock, 93 octane

135i with catless downpipes, exhaust, Code3 Intercooler, BMS Intake, 100 octane fuel