SKU: 4174300091

JB4 Fuel Pressure Upgrade Kit for 2020+ BMW B58/S58/B48

$164.70 $183.00
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Ships within 48 hours · Estimated delivery Aug 24 - Aug 29

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Description

JB4 Fuel Pressure Upgrade Kit for 2020+ BMW B58/S58/B48Finally 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

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 BMS or an authorized reseller and their upgrade kit directly from BMS 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.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 4174300091

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4.3 ★★★★★
Based on 13 reviews
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Verified Purchase
Gracie Dodd
Port Orchard, US
★★★★★ 5
Great option
Flavor Name: Variety, Size: 29 Ounce (Pack of 1)
always a yummy choice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
K
Verified Purchase
Kacie Corona
Draper, US
★★★★★ 5
Love this variety pack!
Flavor Name: Variety, Size: 29 Ounce (Pack of 1)
Love my fishies and love this amazingly large size for such a great price. Always fresh. Perfect for snacking in every situation.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026
S
Verified Purchase
Solid Snake
Birmingham, US
★★★★★ 5
Snackageddon: 40 Bags of Crunchy Chaos (and I Regret Nothing)
Flavor Name: Fun Times Mix, Size: 40 Count (Pack of 1)
As a self-proclaimed snack tactician and veteran of many a vending machine war, I approached the Frito-Lay Fun Times Mix Variety Pack with the skepticism of a man who’s been burned by stale pretzels and betrayed by underfilled chip bags. But this? This was a crunchy revelation. I bought this 40-pack for what I told myself was “emergency rations” during a long week of remote work. In reality, it became a full-blown snack safari. Each bag is a portal to a different salty universe—whether you're in the mood for the tangy rebellion of Doritos or the humble, dependable crunch of Lay’s Classic, this box delivers like a snack-themed Netflix binge. Pros: Variety that slaps: You get a solid mix—Doritos Nacho Cheese, Cheetos, Lay’s, Fritos, and more. No filler flavors that make you question your life choices. Portion control-ish: Each bag is just enough to satisfy a craving without triggering existential guilt. Perfect for bribery: Kids, coworkers, spouses—everyone has a favorite, and you now hold the power. Freshness: Every bag was crisp, sealed tight, and tasted like it came straight from the snack gods’ pantry. Value for money: At roughly 50 cents a bag, it beats the pants off gas station prices. Cons: Disappears mysteriously: I swear I only had three bags and now the box is empty. Either I blacked out in a snack frenzy or my family staged a coordinated chip heist. Uneven distribution: You might get 8 bags of Fritos and only 2 of the Cool Ranch Doritos. It’s a snack democracy, but some flavors are clearly more equal than others. Final Verdict: If you’re looking for a snack pack that brings joy, nostalgia, and a mild sense of shame when you realize you’ve eaten six bags in one sitting, this is it. Whether you're stocking a breakroom, prepping for a road trip, or just trying to survive another Monday, the Frito-Lay Fun Times Mix is your crunchy co-pilot. Would I buy it again? Already did. Twice. And I’m not even sorry.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 23, 2025
J
Verified Purchase
Jim
Belleville, US
★★★★★ 5
Well worth it and the flavours are there
Flavor Name: Fun Times Mix, Size: 40 Count (Pack of 1)
Nice combo of snacks including tasty bags favourites, I gotta say the white cheddar popcorn had me first time ever trying it and I'm hooked well worth the cost! 👍🏼👍🏼
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
V
Verified Purchase
Victoria Schlaack
Charlottesville, US
★★★★★ 5
Perfect for a Big Family – Kids Loved It!
Flavor Name: Fun Times Mix, Size: 40 Count (Pack of 1)
We got this Frito-Lay Fun Times Mix Variety Pack for our 7 kids, and they absolutely loved it! The box is huge and has a great variety of chips, so there’s something for everyone. Perfect for snacks, lunchboxes, or family gatherings. The quality is just what you expect from Frito-Lay, and with 7 kids, it lasted a good while (not very long, honestly 😄). We would definitely buy this again—a fun and convenient way to keep all the kids happy!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2026

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