- Description
- Reviews
- Shipping and Refund
Finally an upgrade kit that adds a high fuel pressure connection to the JB4 for B58/B48 Gen2 and S58 platforms allowing direct control of fuel pressure and fuel trims. Most useful for manual transmission vehicles or those running heavy E85 mixtures on a locked ECU.
It's easy to install and includes a replacement JB4 board and a fuel pressure connector harness that attaches to your existing JB4 harness.
Note this kit is not compatible with Gen1 B58 motors.
Customers who purchased their JB4 new from Palenon Performance can receive a $75 core refund for their original JB4 board. To take advantage of this core refund ship your original board along with copies of the original JB4 purchase receipt and your JB4 upgrade kit order number to the address on our website. Cores must be received 45 days after upgrade kit receipt to qualify.
For installation directions and additional information click here.
Vehicle Fitment
BMW 2 Series
• 2022+ B58 G42 BMW M240i, M240i xDrive, and M240xi
• 2023+ S58 G87 BMW M2
• 2022+ G42 B48 BMW 220i, 230i
• 2020-2021 F22 F23 B48 BMW 230i including xDrive
• 2020-2021 F22 F23 B48 BMW 225i including xDrive
BMW 3 Series
• 2019+ B58 G20 G21 BMW M340i, M340i xDrive, and M340xi
• 2021+ S58 G80 BMW M3
• 2021+ S58 G80 BMW M3 Competition
• 2020+ G20 G21 B46 B48 BMW 318i, 320i, 320Li, 320e, 330i, 330e, 320Li including xDrive
BMW 4 Series
• 2021+ B58 G22 G23 G26 BMW M440i, M440i xDrive, and M440xi including Gran Coupe
• 2021+ S58 G82 BMW M4
• 2021+ S58 G82 BMW M4 Competition
• 2022+ S58 G83 BMW M4 Convertible
• 2021+ G22 G23 G26 B48 BMW 420i, 430i including Gran Coupe and xDrive
• 2020 F32 F33 F36 B48 BMW 430i including Gran Coupe and xDrive
• 2020 F32 F33 F36 B48 BMW 425i including xDrive
Toyota Supra
• 2020-2026 Toyota GR Supra Mk5 B58 3.0L 6 cyl.
• 2020-2026 Toyota GR Supra Mk5 B48 2.0L 4 cyl.
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.
Finally an upgrade kit that adds a high fuel pressure connection to the JB4 for B58/B48 Gen2 and S58 platforms allowing direct control of fuel pressure and fuel trims. Most useful for manual transmission vehicles or those running heavy E85 mixtures on a locked ECU.
It's easy to install and includes a replacement JB4 board and a fuel pressure connector harness that attaches to your existing JB4 harness.
Note this kit is not compatible with Gen1 B58 motors.
Customers who purchased their JB4 new from Palenon Performance can receive a $75 core refund for their original JB4 board. To take advantage of this core refund ship your original board along with copies of the original JB4 purchase receipt and your JB4 upgrade kit order number to the address on our website. Cores must be received 45 days after upgrade kit receipt to qualify.
For installation directions and additional information click here.
Vehicle Fitment
BMW 2 Series
• 2022+ B58 G42 BMW M240i, M240i xDrive, and M240xi
• 2023+ S58 G87 BMW M2
• 2022+ G42 B48 BMW 220i, 230i
• 2020-2021 F22 F23 B48 BMW 230i including xDrive
• 2020-2021 F22 F23 B48 BMW 225i including xDrive
BMW 3 Series
• 2019+ B58 G20 G21 BMW M340i, M340i xDrive, and M340xi
• 2021+ S58 G80 BMW M3
• 2021+ S58 G80 BMW M3 Competition
• 2020+ G20 G21 B46 B48 BMW 318i, 320i, 320Li, 320e, 330i, 330e, 320Li including xDrive
BMW 4 Series
• 2021+ B58 G22 G23 G26 BMW M440i, M440i xDrive, and M440xi including Gran Coupe
• 2021+ S58 G82 BMW M4
• 2021+ S58 G82 BMW M4 Competition
• 2022+ S58 G83 BMW M4 Convertible
• 2021+ G22 G23 G26 B48 BMW 420i, 430i including Gran Coupe and xDrive
• 2020 F32 F33 F36 B48 BMW 430i including Gran Coupe and xDrive
• 2020 F32 F33 F36 B48 BMW 425i including xDrive
Toyota Supra
• 2020-2026 Toyota GR Supra Mk5 B58 3.0L 6 cyl.
• 2020-2026 Toyota GR Supra Mk5 B48 2.0L 4 cyl.
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.
