- Description
- Fitment
- Refund Policy
Transform your Gen 2 B58 powered BMW M240 M340 M440 into a 475whp beast with our simple bolt-on performance package!
Save over $300.00 + get FREE shipping in USA when you purchase this package
Package Features & Benefits
- Gain over 475HP with safe, proven JB4 tuning on a locked 🔒 ECU
- Easy plug-and-play installation with no permanent modifications
- JB4 tuner allows wireless on-the-fly power adjustments & data logging
- Upgraded competition intake adds all the air needed for more power
- The BMS oil catch can keeps oil out of your intake system under high boost
- New NGK spark plugs and install tools included ( gap to .022")
- Includes the all-new JB4PRO Bluetooth Adapter & Free App
Vehicle Fitment
-
BMW 2 Series
• 2022+ G42 Gen 2 B58 BMW M240i, M240i xDrive, and M240xi
-
BMW 3 Series
• 2019-2024 G20 G21 Gen 2 B58 BMW M340i, M340i xDrive, and M340xi
-
BMW 4 Series
• 2021-2024 G22 G23 G26 Gen 2 B58 BMW M440i, M440i xDrive, and M440xi including Gran Coupe
Install guides can be downloaded from each product's page.
Kit Includes
- B58 BMW JB4 Performance Tuner
-
JB4PRO Bluetooth Adapter & Free JB4PRO App
- BMS Turbo Double Baffle Oil Catch Can for G Chassis B58 M240 M340 M440
- 6 NGK 96206 B58 Spark Plugs
- BMS Billet Spark Plug Gapper Tool (12mm)
- BMW / MINI - Magnetic Spark Plug Socket
- Specialty Spark Plug Feeler Gauge
- Official JB4® Logo Car Emblem/Badge
- Official JB4® License Plate Frame
- White Burger Motorsports Logo Sticker Sheet (2 Pack)
- Choose one of our B58 intakes
-
BMS B58 BMW M240i M340i M440i Competition Cold Air Intake
- BMS Silicone Front Mount Cold Air Intake for G Chassis B58 BMW
Recommended Add-ons (Sold Separately)
- BMS Billet Strut Cross Braces for G20 G21 G22 G23 G26 G42 BMW (all engines)
- BMS Billet Oil Filter Cap for B58 BMW Engines
-
Fuel-It! Bluetooth FLEX FUEL KIT for the B58 BMW M240i, M340i, & M440
-
BMS High Output Ignition Coil Kits for BMW, MINI, & Supra
- B58 BMW/Supra BMS Oil Catch Can Oil Filler Cap Dual Vent Connection Kit
- B58 BMW Turbo & Intake Heat Sheild
Download the All New JB4PRO Free App
- Download JB4PRO for Android here.
- Download JB4PRO for iPhone here.
Dyno Results: 2020 BMW M340i

Returns
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. All items are subject to 15% restocking fee from the manufacturer.
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.
Additional non-returnable items:
Gift cards
Downloadable software products
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)
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 shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
If you would like to start a return please click here
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.
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 shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
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 info@amtuning.ca.
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Labor Fees (if applicable)
AM Tuning Canada is not responsible for, and shall not be liable for, any labor fees, installation charges, removal charges, diagnostic fees, or other service-related costs incurred by the customer or any third party in connection with the installation, removal, modification, servicing, or use of any products purchased from AM Tuning Canada. Unless expressly agreed to in writing by AM Tuning Canada, all such labor and service costs are the sole responsibility of the customer.
Exchanges (if applicable)
To start an exchange, click here
Non-refundable items
The following items are non-refundable and non-returnable once purchased: oils, fuel or oil additives, filters, tuning cables, OBDeleven products, Braum seats, spark plugs, coil packs, and similar consumable, wheel spacers, wheels bolts, license plate brackets, electronic tuning components and any other product subject to discretion of AM Tuning Canada.
Other products from brands such as MHD, Bootmod3, Ecutek, Braum racing, Novitec are also non-refundable and non-returnable.
All sales of these items are final and are subject to the policies and discretion of AM Tuning. By completing a purchase, the customer acknowledges and agrees to these terms.
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