BMS G8X JB4 Tuner
BMS G8X JB4 Tuner
BMS G8X JB4 Tuner
$799.00
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    Gains are 80whp/100wtq on pump gas and up to 150whp/175tq on higher octane or E85 mixtures.The ultimate tune for your S58 powered G80 M3 and G82 M4, the JB4 allows you to go from factory stock to full race, and everywhere in between, with the push of a button on...

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    Tech Specs

    Shipping Policy

    Exchange & Returns Policy

    Gains are 80whp/100wtq on pump gas and up to 150whp/175tq on higher octane or E85 mixtures.

    The ultimate tune for your S58 powered G80 M3 and G82 M4, 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. 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, in-dash map switching, electronic wastegate control, ethanol fuel support, and built-in advanced CANbus based diagnostic tools. Installation is easy and completely removable with no splicing or cutting of factory wires.

    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.

    Features:

    • Gains are 80whp/100wtq on pump gas and up to 150whp/175wtq on higher octane or E85 mixtures.
    • Improves 0-60 times and 1/4 mile times
    • Preloaded with custom JB4 tuning software and up to 8 maps for various fuel and modification levels
    • Ethanol (E85) compatible tuning maps
    • Able to read/delete fault codes
    • View and record up to 40 different gauges/engine parameters in real-time with the JB4 app.
    • Boost by gear in 1st, 2nd, and 3rd can be controlled via the JB4 app for a perfect launch
    • Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment
    • 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
    • 91 octane fuel or better required for performance gains
    • Not VIN locked and can be removed without a trace and resold down the road
    • Includes the rugged JB4 billet aluminum enclosure for protection
    • Made in the USA
    • Free USA Shipping
    • 5 year warranty

    Fitments:

    • BMW M3
      • 2021+ S58 G80 BMW M3
      • 2021+ S58 G80 BMW M3 Competition
    • BMW M4
      • 2021+ S58 G82 BMW M4
      • 2021+ S58 G82 BMW M4 Competition

    Shipping policy


    WBS Motorsports operates both with inventory stocked on hand, and through "drop shipping" items from our vendors. By making a purchase from WBS Motorsports, you accept that orders will ship upon availability and inventory status with our, and our vendors products. WBS Motorsports Will Cover Items In The Event Of Lost In Transit/Shipping. Items That Show "Delivery" Status That Are Stolen Are Customers Responsibility, If you Live In a High Theft Area We Always Recommend A Door Camera When Buying Expensive Parts Through The Mail. To combat theft we try to send any item over $1000 in value with signature delivery required, if you are unavailable to sign you may request the shipping company to hold the item for pickup.

    Questions? Feel free to reach out to support@wbsmotorsports.net
    We have a 15-day return policy, which means you have 15 days after receiving your item to request a return. Refunds/Cancelations may be subject to a 5-25% cancelation/restocking fee.

    To be eligible for a return, your item must be in the same condition that you received it, un-installed or unused, and in its original packaging. You’ll also need the receipt or proof of purchase.

    To start a return, you can contact us at support@wbsmotorsports.net. If your return is accepted, we’ll send you instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

    You can always contact us for any return question at support@wbsmotorsports.net




    Damages and issues
    Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.




    Exceptions / non-returnable items
    We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.

    Unfortunately, we cannot accept returns on sale items or gift cards.

    Sale items may be exempt from returns.

    Made To Order and Or Custom Order Items may be exempt from returns/cancelations

    Exchanges
    The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.




    Refunds
    We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method. Please remember it can take some time for your bank or credit card company to process and post the refund too.
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