SKU: 89491947812

STAGE 1 PERFORMANCE UPGRADE TO SUIT BMW 3 SERIES 323CI M52TUB25 2.5 I6

Sale price$139.45 Regular price$154.95
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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13

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Description

STAGE 1 PERFORMANCE UPGRADE TO SUIT BMW 3 SERIES 323CI M52TUB25 2.5 I6This Mace ETC and K&N's air filter have been put together to meet the performance upgrade requirements of BMW 3 series I6 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 3 series I6 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
  • Height: 1.063 in (27 mm)
  • Outside length: 9.375 in (238 mm)
  • Outside width: 6.875 in (175 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: 89491947812

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4.6 ★★★★★
Based on 9 reviews
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Ed
New York, US
★★★★★ 5
Good shoes
Size: 8.5 Wide, Color: Cognac
Great shoes and very comfortable. Not very durable in my opinion. Good for dress or casual.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
C
Verified Purchase
Christopher
Battle Creek, US
★★★★★ 5
Slip-on ready and great quality
Size: 9, Color: Black
These shoes were stuff for the first half hour but then feel great. Well worth the chance and money. Great quality and slip-on easy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
D
Verified Purchase
Derek Preston
Lowell, US
★★★★★ 5
Great buy
Size: 11, Color: Tan
Great fit comfortable look good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
M
Verified Purchase
mike t.
Carnegie, US
★★★★★ 5
Great shoes
Size: 14 Wide, Color: Black
My shoes look good and feel good and now I’m going to purchase the brown pair I saw
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Reviewed in the United States on April 24, 2026
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Verified Purchase
Nicholas D. Clark
Bozeman, US
★★★★★ 4
Don’t buy for restaurant industry
Size: 10.5, Color: Black, Size: 10.5, Color: Black
Good looking shoes, fairly comfortable and good value based on the description shared, so I don’t feel it’s fair to rate them lower than 4 stars. I had high hopes for them based on previous reviews from others saying they wore them in the food and beverage industry that mentioned their quality and durability, however I strongly recommend looking elsewhere if you do. I purchased these to wear working in a full service upscale restaurant and in less than two months have managed to have torn the material on the middle exterior section and the bottoms of the shoes are already completely worn down. Good design, but the durability needs to be improved if they’re to hold up for that industry.
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Reviewed in the United States on July 18, 2025

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