N54 JB4 BMW Performance Tuner
- Description
- CARB RESTRICTED ITEMS
- Shipping and Returns
N54 JB4 BMW Performance Tuner
How about up to 80hp to the wheels (100hp crank) on a completely stock car, up to 160hp to the wheels on factory turbos, or up to 350hp to the wheels on a fully modified car with larger turbo(s)? The JB4 includes a simple plug and play installation harness and is compatible with all ECU versions and transmission types. It's everything you need to take your N54 powered vehicle from mild to wild.
In addition to several performance maps which can be selected "on the fly" right from the driver's seat the JB4 includes a 100% stock bypass map, a valet mode, ethanol fuel (E85) support, progressive water/methanol injection support, racing fuel map, an auto-tuning map that adjusts the JB4 mapping to your current climate, octane, vehicle condition, and modifications continuously, and for those interested in an rpm by rpm user adjustable map. Other features include optional in-dash gauges for boost and other engine parameters, a programmable shift light, on the fly adjustable torque limiting to aid with launches at the track, an optional 2STEP rev limiter & no lift shifting for manual transmission cars, an optional speed delimiter, and much more.
Remember the JB4 does not require any additional modifications or previous stages. Simply install the JB4 as your first and only modification and enjoy an entirely new fast and smooth racing experience. As you decide to modify your car further the JB4 is set up to grow with your vehicle. Whether you're racing a 100% OEM car on pump gas or a 700whp single turbo drag queen, the JB4 has the perfect mix of performance, features, flexibility, and support to ensure your car performs to the best of its potential! Made in the USA. 5-Year Warranty.
Wirelessly connect the JB4 to your Bluetooth 4.0 compatible iOS and Android device via the JB4 Mobile connect kit, or to your Windows laptop with the BMS data cable. Both options allow you to record and analyze vehicle and tuning data, change JB4 performance maps, and update JB4 firmware as we release free newer versions with updates, more powerful maps, and new features under development. A separate JB4 Mobile app purchase is also required.
Note: This item is not CARB (California Air Resource Board) exempt and is not legal for sale or use in the state of California.
Click here for the latest N54 JB4 firmware, map guide, and details.
N54 JB4 Features & Benefits
• N54 Power gains of up to 100hp and 100tq to the wheels on a stock vehicle
• Improves 0-60 times and 1/4 mile times
• Preloaded with custom BMW tuning software and up to 8 maps for various fuel and modification levels
• The JB4 offers a lot more performance, functionality, and safety than your average performance chip
• Quick Plug & Play Installation
• CANbus OBDII integration offering unrivaled tuning features and performance
• Improved performance over non-integrated chip tunes
• Runs as smoothly as stock. This is how your vehicle should have come from the factory
• Compatible with all driving modes
• Fuel economy unchanged during normal driving
• Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment
• 91 octane fuel or better required for performance gains
• Ethanol (E85) compatible tuning maps
• Able to read/delete fault codes
• Not VIN locked and can be removed without a trace and resold down the road
• Designed and assembled in the USA
• Free USA Shipping
• 5-year warranty
Vehicle Fitment
BMW 1 Series
- 2008-2010 E82 BMW 135i Coupe
- 2008-2010 E88 BMW 135i Convertible
- 2011 E82 BMW 1M
BMW 3 Series
- 2006-2010 E90 BMW 335i Sedan including xDrive
- 2006-2010 E91 BMW 335i Touring including xDrive
- 2006-2010 E92 BMW 335i Coupe including xDrive
- 2007-2010 E93 BMW 335i Convertible
- 2011-2013 E92 BMW 335is
BMW 5 Series
- 2008-2010 E60 BMW 535i Sedan including xDrive
- 2008-2010 E61 BMW 535i Touring including xDrive
BMW X Series
- 2008-2010 E71 BMW X6 xDrive35i
BMW Z Series
- 2009-2016 E89 BMW Z4 sDrive35i and Z4 sDrive35is
What is a JB4?
The JB4 is a plug and play tune available for turbocharged vehicles. The JB4 tuner installs between your car's sensors and its DME/ECU (computer) and manipulates vehicle performance through these connections making your vehicle much faster. While it's not the only tuning system that operates this way, the JB4 separates itself from the competition with much more advanced connection points and processing, including CANbus, fuel & spark control, Bluetooth to your smartphone, and a variety of innovative and advanced features not possible with any other system. BMS regularly publishes free mapping and firmware updates adding performance and features as ongoing development allows. In addition, the JB4 system is not VIN-locked to your vehicle and can be quickly removed and swapped between cars or resold at a later time. Often imitated but never duplicated, the JB4 has been the gold standard in plug and play turbocharged performance tuning for over a decade.
DYNO RESULTS
Stock, JB4 on a completely stock automatic 135i, on 91 octane
JB4 on an automatic 335i with Exhaust and BMS intake, on 93 octane
JB4, Exhaust, BMS intake, BMS Flash, on 50% E85 fuel
JB4, RB Hybrid Turbo Upgrade, Exhaust, BMS intake, BMS Flash, BMS Methanol Injection, Larger Intercooler, on 50% E85 fuel
JB4 Optional Phone Software
Click here for the latest JB4 firmware, map guide, and details
Please Note: Competition off-road course only products are not CARB compliant and are for off-road and racing use only. By purchasing from CMBuildz, you understand that these may only be used for off-road and racing use only for unregistered vehicles. Please check with your local, state, and federal laws to see if these products are legal for use in your area. By purchasing any products from CMBuildz, you understand and agree to these terms and accept all liability.
CARB restricted products do NOT ship to addresses that are restricted.
If you are receiving a "Some items in your cart can't be shipped to the provided address" error upon Checkout, then you must remove any CARB restricted items from your cart to complete check out.
All Parts sold are considered Racing Products that are for Competition Off-Road use only.
By purchasing any and all products and completing your cart check out, you are agreeing with CMBUILDZ terms and conditions and understand that some items in your cart might not be able to ship to certain addresses / states due to CARB restrictions and that these products will only be used on Competition Closed Course applications.
CMBUILDZ is not responsible for mis-use of any products nor is responsible for any return/refund costs.
Where do you ship to?
Currently we only ship Domestically in the U.S.A to all U.S. Addresses which include all 50 states and regions. We do not currently ship internationally.
How long do orders take to ship?
We are typically very quick and have a 24-48 hour turnaround time (this applies to products we have readily available at the warehouse and not a product that requires special order). Transit time depends on your order and which warehouse we are shipping from, but typical transit times are between 5-7 business days from one side of the US to the other. Larger items like bumpers and exterior conversions can take up to 10 business days to get you from time of shipment.
What's your domestic shipping policy?
All domestic orders will be shipped to the verified billing address associated with the customer’s credit card. In the event that the products need to be shipped to another address, CMBUILDZ will verify the transaction with the customer by requesting a screenshot of our transaction on the customers online banking portal. Similar to how PayPal verifies orders, CMBUILDZ has implemented an authorization program that will display a unique code on the credit card transaction next to where the “CMBUILDZ” name appears. Other means of verification may also be required depending on the situation. We thank you in advanced for your cooperation.
What's your policy on advertised pricing?
All prices are subject to change without notice. In the event that an incorrect price is listed or advertised, CMBUILDZ reserves the right to refuse or cancel any orders at the incorrect price.
Returns might be subject to a restocking fee
A 20% restocking fee may be applicable on all authorized returns, canceled orders (special or otherwise, shipped or unshipped) in addition to any original shipping fees.
