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48 Us States & Puerto Rico
The JB4 is a plug and play performance tuner that attaches to two easy to access sensors in the engine bay and works with your factory DME tuning to remap your boost, timing, and fueling for optimal performance and reduced turbo lag. It features a 64mhz processor allowing sensors to be sampled 800 times per second using dedicated 10-bit digital to analog converters, ensuring smooth and powerful performance.
JB4 Installation is very discrete and it quickly removes without a trace when needed. Fuel economy during normal driving is unchanged. Compatible with all driving modes. Does NOT require flashing the ECU!
The system is fully CANbus equipped allowing the tuning to take in advanced engine data for mapping, logging, and diagnostics. Data channels include boost, timing, air/fuel, fuel trims, throttle, knock control, and much more! 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.
• Power gains of up to 50whp and 460wtq to the wheels on a stock vehicle
• Improves 0-60 times and 1/4 mile times
• Preloaded with custom JB4 Toyota GR Yaris/GR Corolla 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 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 Shipping in the USA
• 5-year extended warranty
Toyota
• 2021+ Toyota GR Yaris Turbocharged 3cyl
• 2023+ Toyota GR Corolla Turbocharged 3cyl
What is a JB4?
The JB4 is a plug & 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 quickly be 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.
If a product is ordered and not wanted, the UNUSED item can be returned. To return an item, it must be in brand new condition with original packaging. If the item cannot be resold or is a special order or custom made item, we cannot accept a return. Shipping is non refundable in either direction unless approved by JCERacing and if the error was from our side. All items wanting to be return MUST be reported within 30 days of the original invoice date. No items will be returnable after 30 days. All products shipped from the JCERacing warehouse are shipped via FedEx, UPS, USPS, or ISLAND WIDE and require a signature when delivered. Some packages shipped from the manufacturer may or may not require signatures for package release. FedEx, UPS, USPS, and DHL have package pick up locations if you are unable to sign for the package. If the package is returned to JCERacing or manufacturer, you will be responsible for the return shipping costs and pay a small restocking fee if you choose to not have the item reshipped. These fees will be charged to your account on file or will be invoiced to you. .
All products are shipped out from one of the authorized JCERacing shipping locations. JCERacing drop ships some products while some products ship direct from our warehouse. Special arrangements may need to be made for international orders and oversize packages. .
If you receive a damaged product, please do the following: IMMEDIATELY CONTACT US BY EMAIL TO: shipping@jceracing.com Keep the product with its original packaging and box Make a list of the damaged or lost item(s) JCERacing will contact the shipper once we receive the email info above to schedule a pickup if needed. DO NOT send it back to the return address without written approval from JCERacing.Once the product is received back and inspected, a replacement or credit will be issued.
Free Shipping Offers are for Standard Ground Delivery service and are only valid for shipping addresses within the 48 Contiguous United States and Puerto Rico. Truck freight and oversize packages still apply unless otherwise notes and can only be shipped to the lower 48 States & Puerto Rico. Same Day Shipping (on most parts) if you order by 5PM EST on a business day. We ship via UPS Ground, Fed Ex, DHL and/or USPS to all locations in the Continental 48 States & Puerto Rico.u.
The delivery time of your package primarily depends on the shipping carrier and the service level selected. For more info about our shipping policy go to https://jceracing.com/free-shipping/
JCERacing ships packages all over the globe. If you would like to see an estimated cost of shipping an item(s) internationally, simply send an email to shipping@jceracing.com with the desired item(s) you would like t buy and add full name and address to make you a quote.
JCERacing is proud to offer Free Shipping on Orders Over $199 to 48 USA States & Puerto Rico
Free Shipping Offers are for Standard Ground Delivery service and are only valid for shipping addresses within the 48 Contiguous United States and Puerto Rico. Truck freight and oversize packages still apply unless otherwise notes and can only be shipped to the lower 48 States & Puerto Rico. Same Day Shipping (on most parts) if you order by 5PM EST on a business day. We ship via UPS Ground, Fed Ex, DHL and/or USPS to all locations in the Continental 48 States & Puerto Rico.
The delivery time of your package primarily depends on the shipping carrier and the service level selected. When selecting the shipping method for your package, please keep in mind that most carriers do not work on weekends or major holidays. When carriers quote shipping days, they are referring to business days. Business days are defined as Monday through Friday, with the exception of holidays observed by the parcel carriers. As a general rule, transit times are as follows:
JCERacing ships packages all over the globe. If you would like to see an estimated cost of shipping an item(s) internationally, simply send an email to shipping@jceracing.com with the desired item(s) you would like t buy and add full name and address to make you a quote. Please remember these quotes do not include any duties, customs charges, or brokerage fees that may accompany your shipment; all importation fees assessed by the shipping carrier, local or national governments are the buyer’s responsibility and will not be paid or reimbursed by JCERacing. By law, JCERacing is required to list all package contents at the actual purchase price. If a package is refused rather than pay any importation fees, JCERacing reserves the right to deduct the cost of the return shipment, including customs clearance charges, from your product refund or abandon the package with no refund when the cost of return shipping is more than the original order. For more information contact us now at 787-902-3192 or send us an email.
Opening a Layaway plan is easy & only requires a few steps and completely online. To initiate a Layaway, simply send us an email with the items you want to sales@jceracing.com just add in subject: Lay Away Plan for Your Name. There's no opening fee required for a Layaway. All you need to do is make a small down-payment of 20% of the total of the order.
Questions? You can ask customer service at 1-787-902-3192 or send us an email to shipping@jceracing.com
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JB4
Power gains of up to 40hp and 50tq to the wheels on a stock vehicle without the risks associated with flashing!This plug and play tuner attaches to two easy to access sensors in the engine bay and...
