- Refund Policy
Plug in up to 40 extra wheel horsepower in seconds!
Finally our popular and well-proven JB Plus quick install tuner is available for B46, B48, and B58 applications! Boost is user adjustable up to 4.5psi over stock providing gains up to 30 wheel horsepower and 40 wheel torque on the B48 motor and up to 40 wheel horsepower and 50 wheel torque on the B58 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 installation 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.
B58_JB_PLUS is CARB Approved Under Executive Order (EO) No.D-744-4 for all 2016-2018 BMW 230i, 330i, 430i, 530i, 340i, 440i, 740i, M240i, and X1 applications.
Note: If your BMW has a B38/B46/B48/B58 engine and you don't see your exact model on the list below, please email us.
BMW 1 Series
• 2021+ F40 B48 128ti
• 2019+ F40 B48 M135i
• 2019+ F40 B38 M118i
• 2015+ F20/F21 B58 M140i
• 2016+ F20/F21 B48 120i, 125i
• 2015+ F20/F21 B38 116i
• 2015+ F20/F21 B38 118i
BMW 2 Series
• 2022+ G42 B58 M240i xDrive
• 2022+ G42 B48 220i 230i
• 2016-2021 F22 F23 B58 M240i/iX
• 2017-2021 F22 F23 B48 230i/iX
• 2017-2021 F22 F23 B48 225i/iX
• 2017-2021 F22 F23 B46 220i/iX
• 2015-2021 F22 F23 B38 218i
• 2015-2021 F45 F46 B38 216i Active tourer and GT
• 2014+ F45 F46 B38 218i, 220i Active tourer and GT
• 2019+ F44 B48 M235i/iX Gran Coupé
BMW 3 Series
• 2020+ G20 B58 M340i/M340iX
• 2020+ G20 B48 330i/330iX
• 2016+ F30 B58 340i/340iX
• 2016+ F30 B48 330i/330iX/330e
• 2016+ F30 B48 325i/325iX
• 2016+ F30 B46 320i/320iX
• 2016+ F30 B46 318i/318iX
BMW 4 Series
• 2021+ G22 G23 G26 B58 M440i/M440iX/Gran Coupe
• 2021+ G22 G23 G26 B48 420i/430i/430iX/Gran Coupe
• 2016-2020 F32 F33 F36 B58 440i/440iX/Gran Coupe
• 2016-2020 F32 F33 F36 B48 430i/430iX/Gran Coupe
• 2016-2020 F32 F33 F36 B48 425i/425iX
• 2016-2020 F32 F33 F36 B46 420i/420iX
• 2016-2020 F32 F33 F36 B38 418i
BMW 5 Series
• 2017+ G30 B58 540i/540iX
• 2017+ G30 B46/B48 530i/530iX/530e
• 2021+ G30 545e
BMW 6 Series
• 2018+ G32 G33 B48/B58 630i/640i/640iX
BMW 7 Series
• 2016+ G11/G12 B58 740i/740iX
• 2016+ G11/G12 730i/730iX
BMW 8 Series
• 2020+ G15/G14/G16 B58 840i/840iX/Gran Coupe
BMW X Series
• 2016+ B46/B48 X1
• 2018+ B46/B48 X2
• 2018+ G01 B48/B58 X3 2.0i/3.0i/M40i
• 2019+ G02 B48/B58 X4 2.0i/3.0i/M40i
• 2019+ G05 B58 X5 40i
• 2021+ G05 X5 45e
• 2019+ G07 B58 X7 40i
• 2019+ BMW G29 B58 Z4 M40i
• 2019+ BMW G29 B46/B48 Z4 30i and Z4 20i
• 2020 GR Toyota Supra 3.0L 6 cyl. (B58)
• 2014+ F57 Cooper S
• 2015+ F57 Cooper JCW
• 2014+ F55/F56 Cooper S
• 2015+ F55/F56 JCW
• 2018+ F55/F56 MINI One
• 2017+ F60 Countryman S
• 2017+ F60 Countryman S ALL4
• 2018+ F60 Countryman JCW ALL4
• 2016+ F54 Clubman S
• 2017+ F54 Clubman S ALL4
• 2017+ F54 Clubman JCW ALL4
If you don't see your B38/B46/B48/B58 powered vehicle or year listed here please email us.
2016 BMW 340i, 91 octane
Stock vs. JB Plus
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
* Customer must pay for the shipping to the original manufacturer.
Several types of goods are exempt from being returned. Perishable goods such as food, flowers, newspapers or magazines cannot be returned. We also do not accept products that are intimate or sanitary goods, hazardous materials, or flammable liquids or gases.
Additional non-returnable items:
* Gift cards
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.
There are certain situations where only partial refunds are granted: (if applicable)
* Book with obvious signs of use
* Any item not in its original condition, is damaged or missing parts for reasons not due to our error.
* Any item that is returned more than 14 days after delivery
Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again.
Then contact your credit card company, it may take some time before your refund is officially posted.
Next contact your bank. There is often some processing time before a refund is posted.
If you’ve done all of this and you still have not received your refund yet, please contact us at email@example.com
We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email at firstname.lastname@example.org labelled as “Defective Item”
If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return. Once the returned item is received, a gift certificate will be mailed to you.
If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send a refund to the gift giver and he will find out about your return.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.
Depending on where you live, the time it may take for your exchanged product to reach you, may vary.
If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.