SKU: 9923718814

STAGE 1 PERFORMANCE UPGRADE TO SUIT BMW 4 SERIES 420I B48B20M0 TURBO 2.0L I4

Sale price$119.25 Regular price$132.50
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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20

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Description

STAGE 1 PERFORMANCE UPGRADE TO SUIT BMW 4 SERIES 420I B48B20M0 TURBO 2.0L I4This Mace ETC and K&N's air filter have been put together to meet the performance upgrade requirements of BMW 4 series B48B20M0 and B48B20O0 I4 engines. Mace ETC eliminates the delay that exists between the throttle pedal and the butterfly in the throttle body, re establishing throttle response and bottom end acceleration while improving low torque. There are different performance modes in this ETC that helps you to increase throttle response and

This Mace ETC and K&N's air filter have been put together to meet the performance upgrade requirements of BMW 4 series B48B20M0 and B48B20O0 I4 engines.

Mace ETC eliminates the delay that exists between the throttle pedal and the butterfly in the throttle body, re-establishing throttle response and bottom-end acceleration while improving low torque. There are different performance modes in this ETC that helps you to increase throttle response and improve overall drivability.

The K&N replacement air filter is designed to boost the horsepower and acceleration while providing superior filtration. It is washable and reusable and is custom designed to fit into your existing factory air box. This filter lasts up to 80,000km before cleaning is required depending upon driving conditions. It comes with K&N million mile limited warranty and it will not void vehicle warranty.


Modes of ETC:

  • Sport Mode: 9 stages of increased accelerator response suited for spirited driving.
  • Economy Mode: Reduced accelerator response suited for economy driving around towns and on highways.
  • Normal Mode: Factory throttle response.Â


ETC Features:

  • OBD.II free, meaning power is sourced directly from the pedal and additional plugs are no longer required.
  • Temperature ranges from -40 to 125 °C.
  • Previously set stage numbers are retained thanks to Power off memory function.
  • Digital signal output AD/DA up to 10 Bit, efficiently responds to the original throttle signal.


Air Filter Specifications:

  • Air filter shape: Panel
  • Height: 1.25 in (32 mm)
  • Outside length: 10.5 in (267 mm)
  • Outside width: 8.563 in (217 mm)


Contents:

  • 1 X Mace ETC
  • 1 X K&N Air filter

Vehicle Fitment Guide


Notes:

  • Installation of the Mace ETC is quite simple and the modification is completely reversible within a couple of minutes. All kits include simple fitting and calibration instructions.
  • The air filter included in this package can be purchased separately through another listing.
  • The ETC included in this package can be purchased separately through another listing.
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: 9923718814

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4.2 ★★★★★
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Sunny
Waukegan, US
★★★★★ 5
Love these tunics!
Color: Aprioct Boho Yg9, Size: XX-Large
I absolutely love these tunics! They are very figure flattering & so soft & comfortable to wear. The material is on the thinner side so they are great for warmer weather. I have very sensitive skin so many fabrics irritate me but this one is fabulous. I would wash on gentle & hang to dry to keep fabric looking nice. After wearing the first one, I ordered 3 more…
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Reviewed in the United States on May 12, 2026
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debbie
Battle Creek, US
★★★★★ 5
Pretty Tunic Top
Color: Willowfloral, Size: X-Large
Very happy with this tunic top! Long enough for me to feel good about wearing it with leggings, but not SO long it feels like a dress. Really good V-neck, not just a little notch at the top that some brands call a v-neck. I ordered the teal floral XL and was very happy with the fit and drape. I'm a size 18W with a 42D bust and a chubby waistline. I often end up in XXL or 1X tops, but this fit well as an XL. Nice feel to the material and a bargain at the price!
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Reviewed in the United States on March 26, 2026
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Miche P.
Whiting, US
★★★★★ 5
Very flattering in my opinion
I'm 5'6 and no hips, so I really liked that the length is a little longer and flares a little at the hips giving my chunky but not curvy figure some illusion of a girlish figure. The pattern and colors were pretty & I'd say pretty close to the ad. Great blues and a coral/peach ... not sure my camera did it justice. I like the pleat at the back ... I feel that it minimizes the bra bulge that can happen at times. I stepped out after try on and my guy said it looked great (he's a truth teller with clothes) so that made me feel better because sometimes I see what I want to see at first & later see the flaws. I do see the case instructions ... getting used to hang to dry all things lately. Feels a little more nylon-ish but not bad. Its not super thin and light where I think it's a clingy thing. Really do like this shirt
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Reviewed in the United States on March 9, 2026
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Susanna J
Chelsea, US
★★★★★ 4
Nice, but not great fabric quality
Color: Floral Black, Size: Large
The fit was great. Colors were as shown. The fabric shows signs of wear pretty much on the second wear so durability isn’t great. The fabric is soft and light weight so perfect for spring and fall. Not sure I’d buy again as I think it will look worn out quickly.
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Reviewed in the United States on April 4, 2026
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NJNC
Grantham, US
★★★★★ 5
Ding! Ding! Ding! We have a winner!
Color: Boho Multicolor, Size: XX-Large
Wow. These are really nice tops. The material is soft and very comfortable and the fit is true to size. Colors are as pictured. They look and feel like they cost a lot more! I initially order this in 2 different patterns (Boho and Willowfloral) and I just now ordered 3 more, black, purple, and wine red. Can easily be worn all year round and can be dressed up or down. All in all, I’m very pleased with this purchase.
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Reviewed in the United States on May 31, 2026

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