Ready to take your F Chassis BMW N55 turbo to the next level?
How about up to 60hp to the wheels (80hp crank) on a completely stock car or up to 100hp to the wheels (120hp crank) on a fully modified car? The JB4 features a simple plug and play installation harness for easy installation and includes many features not found on any other tune. Including the ability to enable/disable the tuning from the drivers seat, gear dependent boost control to help with traction, ethanol and racing fuel support, built in diagnostic code reading/deleting, free firmware updates, and much more. 
F Series N55 JB4 Applications:

BMW 1 Series
• 2012+ N55 BMW F20 F21 M135

BMW 2 Series 
• 2014+ N55 BMW F22 F23 M235i
• 2016+ N55 BMW F87 M2 

BMW 3 Series
• 2012+ N55 BMW F30 F31 335i/ix
• 2013+ N55 BMW F34 335i xDrive GT

BMW 4 Series
• 2014+ F32 F33 F36 435i / 435ix 

BMW 5 Series
• 2011+ N55 BMW F10 F11 535i/ix
• 2010+ N55 BMW F07 535i/ix GT

BMW 6 Series
• 2011+ N55 BMW F12 F13 640i