- Description
- Reviews
- Shipping and Refund
Plug in up to 40 extra wheel horsepower in seconds!
Finally our popular and well-proven JB Plus quick install tuner is available for 2020+ B58 Toyota Supra applications! Boost is user adjustable up to 4.5psi over stock providing gains up to 40 wheel horsepower and 50 wheel torque on the B58 Supra motor. Timing and fueling remain managed seamlessly by the DME preserving all factory safety systems.
While the JB4 is the ultimate tuning tool the JB Plus (JB+) is a quick and simple way to add a few HP with minimal cost and minimal install effort. Something that anyone can buy, install in under a minute, and really feel from the driver's seat.
Fuel economy during normal driving is unchanged. Automatically detects the engine type upon installation allowing the same unit to be used for any B48 B58 F series application!
For those who want to start with the JB Plus and upgrade to the higher power more advanced JB4 tune, we offer a 100% trade up credit. To qualify simply purchase the JB4 system from our website directly and then after receipt mail back the JB Plus along with its purchase receipt from BMS or any authorized reseller and we'll issue a $239.00 refund against your JB4 purchase. The offer is valid for up to one year after purchasing the JB Plus. Made in the USA. 5 Year Warranty.
APPLICATIONS
Toyota
• 2020+ GR Toyota Supra 3.0L 6 CYL. (B58)
DYNO RESULTS
2016 BMW 340i, 91 octane
Stock vs. JB Plus

Handling
Orders shipped directly from our warehouse are usually processed the same business day if placed before 12 PM MST, and tracking details are provided within 1 business day.
For drop-shipped items, processing times may vary depending on the manufacturer, typically 3–5 business days. Tracking updates may take longer in such cases.
Expedited shipping applies only once the item is ready to ship.
Return
You have 30 days after receiving your order to request a return. Items must be unused, in original packaging, and include proof of purchase. Customers are responsible for covering the return shipping costs.
To start a return, email us at sales@palenonperformance.com. Returns sent without approval will not be accepted.
You can request a return directly from your account by selecting the return option on your order page. Here is the URL: https://shopify.com/55092379855/account/orders
Non-returnable items:
- Burger Motorsports (BMS) products
- Used items
- Air Intakes
- Hazardous materials, flammable liquids, or gases
- Discounted items and gift cards other than "PALENON PERFORMANCE" brand
Exchanges
Return the item and place a new order once approved.
Refunds
Approved refunds are issued to the original payment method. A restocking fee is 20% will be applied. Processing time depends on your bank or payment provider. The original shipping cost will not be refunded.
Cancellations
Canceled orders are subject to a 5% merchant fee (8% for Shop Pay installments). Custom, specialized items or pre-order items canceled within their lead time are also subject to this fee. Will also incur a 10% restocking fee.
Damaged or incorrect items
Inspect your order upon arrival and contact us immediately for assistance. If the wrong part was ordered, customer covers return shipping.
Disputes / Chargebacks
Our legal team is fully prepared to take stringent action against you for filing a baseless claim and initiating a fraudulent chargeback. This will lead to civil or criminal proceedings, which would require you to engage with our attorneys in our jurisdiction.
It is crucial to understand that filing a false chargeback is a serious offense, punishable by substantial fines or imprisonment. Potential penalties for fraudulent chargebacks can include one to three years in prison and fines ranging from $1,000 to $10,000. We treat all chargebacks with the utmost seriousness, regardless of the amount, as this is classified as a felony.
We will compose all necessary information to send your account to a collections agency and request that you be served once our lawyers organize the evidence and file a case against you.
Plug in up to 40 extra wheel horsepower in seconds!
Finally our popular and well-proven JB Plus quick install tuner is available for 2020+ B58 Toyota Supra applications! Boost is user adjustable up to 4.5psi over stock providing gains up to 40 wheel horsepower and 50 wheel torque on the B58 Supra motor. Timing and fueling remain managed seamlessly by the DME preserving all factory safety systems.
While the JB4 is the ultimate tuning tool the JB Plus (JB+) is a quick and simple way to add a few HP with minimal cost and minimal install effort. Something that anyone can buy, install in under a minute, and really feel from the driver's seat.
Fuel economy during normal driving is unchanged. Automatically detects the engine type upon installation allowing the same unit to be used for any B48 B58 F series application!
For those who want to start with the JB Plus and upgrade to the higher power more advanced JB4 tune, we offer a 100% trade up credit. To qualify simply purchase the JB4 system from our website directly and then after receipt mail back the JB Plus along with its purchase receipt from BMS or any authorized reseller and we'll issue a $239.00 refund against your JB4 purchase. The offer is valid for up to one year after purchasing the JB Plus. Made in the USA. 5 Year Warranty.
APPLICATIONS
Toyota
• 2020+ GR Toyota Supra 3.0L 6 CYL. (B58)
DYNO RESULTS
2016 BMW 340i, 91 octane
Stock vs. JB Plus

Handling
Orders shipped directly from our warehouse are usually processed the same business day if placed before 12 PM MST, and tracking details are provided within 1 business day.
For drop-shipped items, processing times may vary depending on the manufacturer, typically 3–5 business days. Tracking updates may take longer in such cases.
Expedited shipping applies only once the item is ready to ship.
Return
You have 30 days after receiving your order to request a return. Items must be unused, in original packaging, and include proof of purchase. Customers are responsible for covering the return shipping costs.
To start a return, email us at sales@palenonperformance.com. Returns sent without approval will not be accepted.
You can request a return directly from your account by selecting the return option on your order page. Here is the URL: https://shopify.com/55092379855/account/orders
Non-returnable items:
- Burger Motorsports (BMS) products
- Used items
- Air Intakes
- Hazardous materials, flammable liquids, or gases
- Discounted items and gift cards other than "PALENON PERFORMANCE" brand
Exchanges
Return the item and place a new order once approved.
Refunds
Approved refunds are issued to the original payment method. A restocking fee is 20% will be applied. Processing time depends on your bank or payment provider. The original shipping cost will not be refunded.
Cancellations
Canceled orders are subject to a 5% merchant fee (8% for Shop Pay installments). Custom, specialized items or pre-order items canceled within their lead time are also subject to this fee. Will also incur a 10% restocking fee.
Damaged or incorrect items
Inspect your order upon arrival and contact us immediately for assistance. If the wrong part was ordered, customer covers return shipping.
Disputes / Chargebacks
Our legal team is fully prepared to take stringent action against you for filing a baseless claim and initiating a fraudulent chargeback. This will lead to civil or criminal proceedings, which would require you to engage with our attorneys in our jurisdiction.
It is crucial to understand that filing a false chargeback is a serious offense, punishable by substantial fines or imprisonment. Potential penalties for fraudulent chargebacks can include one to three years in prison and fines ranging from $1,000 to $10,000. We treat all chargebacks with the utmost seriousness, regardless of the amount, as this is classified as a felony.
We will compose all necessary information to send your account to a collections agency and request that you be served once our lawyers organize the evidence and file a case against you.
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