Burger Motorsports BMW S55 M2 M3 M4 Performance Tuner
The ultimate tuner for your S55 powered vehicle, the JB4 allows you to go from factory stock to full race, and everywhere in between, with the push of a button on your steering wheel or phone. The JB4 installs and removes easily and includes many unique features not found in any other tune including user adjustable 1st and 2nd gear boost limiting, map switching in dash, electronic wastegate control, ethanol fuel support, and built in advanced CANbus based diagnostic tools. Installation is completely removable with no splicing or cutting of factory wires.
The JB4 is compatible with the factory flash map, competition package flash map, all off the shelf flash maps, custom tuned flash maps, or any flash map you choose to load! For those who don't mind flashing BMS provides free back end flash maps designed to optimize performance for specific builds and fuels saving you hundreds of dollars and many hours of time on custom flash tuning.
For the latest performance results, updates, firmware, and map guide be sure to visit N54tech.com.
For those running aftermarket turbocharged systems with aftermarket Tial wastegate(s) we have a special version of the S55 JB4 specifically to control them. Email us so we can manually invoice you for the JB4_S55_TIAL version.
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. Separate JB4 Mobile app purchase also required.
JB4 Map Guide
- Map 0: Disable JB4 / Full Pass-Through Mode
- Map 1: Stage1 map adding approximately 40whp and 40wtq across the power band on pump gas. Suitable for all stages and fuel mixtures.
- Map 2: Slightly more aggressive version of map 1 intended for vehicles with exhaust modifications and 93+ octane fuel. It can also be used with E85 and racing fuel mixtures.
- Map 3: Slightly less aggressive version of map 1 intended for vehicles running on lower-grade fuels such as 91 octane.
- Map 4: OEM performance but with JB4 active for diagnostics only.
- Map 5: //M low torque / linear throttle map.
- Map 6: Custom tuning map.
- Map 7: Race gas map. Requires 100 octane unleaded fuel and for the fuel mass connector to be installed. This map can also be used with up to 35% E85.
- Map 8: Methanol injection map. Requires a BMS FSB controller or methanol kit for progressive mapping and safety systems.
- Gains are 80whp/100tq on pump gas and up to 120whp/140wtq on higher octane or E85 mixtures.
- Quick Plug & Play Installation
- CANbus integration offering unrivaled tuning features and performance
- Runs as smoothly as stock, this is how your BMW 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
- 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
- 5 year warranty
2018 2019 2020 M2 Competition (S55 Engine)
2015 2016 2017 2018 2019 F80 M3
2015 2016 2017 2018 2019 F82 F83 M4, M4 GTS, M4 CS
Products that have an availability of "In Stock" are shipped same day or the next if ordered before 2 PM EST. Products that have an availability of "Manufacture Ship" are products that ship directly from the manufacture and usually ship within 2-3 business days. At times these items may take longer to ship. By contacting us via our contact form here we can give you an estimate on shipment.
No orders are shipped on weekends or holidays. If we are experiencing a high volume of orders, shipments may be delayed by a few days. If there will be a significant delay in shipment of your order, we will contact you via email or telephone. Please allow additional days in transit for delivery. Please make sure when submitting an order that your address is correct.Free Shipping
Free shipping is available within the lower 48 states for some products. Simply select the free shipping option during checkout, if it's available. (This does not apply to large items or items where shipping quotes are required (ie: bumpers, seats, GT Wings, and so on). Individual items with Free Shipping will be shipped by the carrier of our choice to a single address within the continental United States. This offer excludes shipments going to Alaska, Hawaii, Military Boxes, and items too large to ship via a standard carrier.Duties and Customs
When shipping internationally Complex Seven is not responsible for Duties and customs fee's. These fees must be paid directly to the courier as we do not impose them.Address Restrictions
The billing and shipping address must be the same. If it is not we will call or email to verify the inconsistent addresses. This will put a hold on processing your order. If no response from either communication channels, your order will be cancelled and refunded in full.
We don’t ship to PO Boxes.Returns
All returns are subject to re-stocking fee up to 20%. The restocking fee covers the cost of our order processing and restocking process. Items you wish to return MUST be approved prior to your return. Please click here to start the return process. All return inquiries must be sent to us within 30 days of receiving your order. Approved returns MUST be sent back to us within 15 days of receiving your return approval. Returned items must be in brand new condition or, unused condition. Shipping, handling, and transaction fees are non-refundable.
No returns, cancellations, or refunds are allowed on special order items. Once items have been returned to us, and the condition has been inspected and approved, a refund will be issued. Approved refunds are issued within 2-3 business days. Also note that each bank process returns differently, so it might not appear in your account immediately. Exchanges
Please click here to initiate an exchange. Exchanges are subject to second shipping charges unless there was a mistake made on the order. If a mistake was made by Complex Seven Industries, we will provide a return shipping label for you to use to make the exchange as seamless as possible.