For the advanced user, the team at VAC feels that the JB4 offers
the most flexibility and performance of any performance tuning
currently available for the N55 twin-turbo platform: A simple
plug and play installation harness and powerful built in software
offers excellent gains with very little effort or cost.
Built in deletion of hidden "tuner detection" codes and compatible
with all ECU versions makes this a safe bet when spending your hard
earned cash and with over 5000 in use and tens of millions of
customer miles driven the BMW Juice Box has proven time and time
again to be the most flexible and powerful way to extract the true
potential from your N54 twin turbo!
That latest and greatest Version 4 (JB4) featuring 5x the
processing power, 2x the memory, more robust signal conditioning,
and integrated CANbus. Our new CANbus module allows the JB4 to
communicate with your vehicle like never before.
New features include code reading/deleting, optional in dash boost,
timing, air/fuel, shift light, and IAT gauges, auto-tuning, a
buttery smooth new CANbus based integrated boost control system,
map switching on the fly via steering wheel controls, built in
'Downpipe Fix', hot/cold oil temperature protection, progressive
methanol integration, water pump remapping, gear dependent boost
control/traction assist, and much more to come with free firmware
updates uploaded using a windows laptop (or Mac w/ windows
emulator) and a BMS USB cable.
In addition to our performance mapping the JB4 features several
"on the fly" user selectable maps including a 100% stock bypass
map, a 4500rpm rev limited valet mode, a fuel economy map, a
progressive methanol map, a race gas map, and for those interested
an rpm by rpm user adjustable map... And unlike other flash and
piggyback tunes that charge per the map and lock to your cars VIN;
the JB4 is 100% unlocked. Meaning you get access to every new
feature we release free of charge and when your lease is up will be
able to resell the JB4 without penalties.
-The JB4 does not require any additional or previous
modifications to gain power. Simply install the JB4 as your first
and only modification and enjoy an entirely new fast and smooth
driving experience... or add to bolt-on's like downpipes,
intercooler, cat-backs, larger turbos, intakes and more!
-Each JB4 requires no user setup or customization to
operate. Those features are included and work right after
installation. This is a product for more advanced users or for the
average enthusiast simply install and enjoy!
• 2011 +
N55 BMW E82 135i [Left Hand Drive] & 135iS
• 2011 + N55 BMW E90 E91 E92 E93
335i/xi & iS
Fully compatible with DCT, Auto and Manual
2010 and earlier twin-turbo N55 JB4 solution
is available below...
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