SKU: 17603534298

STAGE 1 PERFORMANCE UPGRADE FOR BMW 4 SERIES 420D N47D20 B47D20 TURBO DIESEL 2.0L I4

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Description

STAGE 1 PERFORMANCE UPGRADE FOR BMW 4 SERIES 420D N47D20 B47D20 TURBO DIESEL 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 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

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

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
  • Outside length: 8.938 in (227 mm)
  • Outside width: 8 in (203 mm)
  • Height: 1.25 in (32 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: 17603534298

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Amazon Customer
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Definitely a used book!
There was more than just a little wear on the spine along with some blue writing on the inside of the book.
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Reviewed in the United States on July 7, 2023
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Ribeye Ranger
Pawtucket, US
★★★★★ 5
Works Well, Tastes Good, Lasts a Long Time
Size: 3 Ounce (Pack of 1)
Needed to get a product with no fluoride and not made by one of the large mfgrs of toothpaste. I used to used HELLO, but they were bought out by Colgate. Not a fan. So, I thought I'd try this as I used to live near the area this is produced. It is a lesser sweet taste than the HELLO product lines, but very nice results after just a couple uses and the taste is fine. Works well, tastes good, affordable.
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Reviewed in the United States on November 1, 2025
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West Palm Beach, US
★★★★★ 5
Keeps breath fresh for longer.
Size: 3 Ounce (Pack of 1)
Love this toothpaste. It’s like another brand that made the pm toothpaste that was good for morning breath. I wake up and still can somewhat taste the freshness. Maybe the peppermint is good/strong, but works well without the burning sensation.
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Reviewed in the United States on May 8, 2026
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Charlottesville, US
★★★★★ 5
TSA compliant, and Fluoride-free
Size: 3 Ounce (Pack of 1)
Nice to have a travel size fluoride-free option!
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H. Rediker
Pawtucket, US
★★★★★ 4
Cleaner teeth
Size: 5.5 Ounce (Pack of 1)
I feel like my teeth get cleaned better with this product than usual mass market brands. Only downside is it doesn't have enough mint flavor to act as a breath freshener. But it's perfect if you can't tolerate a strong mint taste.
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Reviewed in the United States on October 26, 2024

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