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Holley EFI Lightweight Dominator ECU
Holley EFI Lightweight Dominator ECU
Holley EFI Lightweight Dominator ECU
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Holley EFI Lightweight Dominator ECU

Marsoni M251S
Sale price$1455.47
Pay 4 payments of $363.87 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Holley EFI Lightweight Dominator ECUPN 554 114LW is a Holley EFI Dominator ECU which utilizes a lighter potting material than the standard Dominator unit (reduces total weight by 1. 8 lbs). This lightweight version is specifically intended for drag racing. It is not recommended for use in high heat conditions (under hood mounting installations), and applications with high continuous current draw. Features Designed for GM LS Gen III and IV engines equipped with GM LS3 L92 cylinder heads
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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
4.0 ★★★★★
Based on 2172 reviews
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Product Reviews
I
Verified Purchase
Ian H
Houston, US
★★★★★ 3
Check engine light
Style: Gloss Black Single Slat, Size: G20（2019-2022）, Style: Gloss Black Single Slat, Size: G20（2019-2022）
Looks good but will throw a check engine light on your car. The fitment isn’t perfect causing the adaptive vents to show that they are failing even though they are not
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2026
W
Verified Purchase
Works great and a better price than others. Works well in the 16” oven.
Bozeman, US
★★★★★ 5
Quick fix
Style: Gloss Black Single Slat, Size: E46（2002-2005）4-Door
Easily Installed with no modification in under a minute. The finish was a little glossier, then OE.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 28, 2026
C
Verified Purchase
Carlos M. Ortiz
Natrona Heights, US
★★★★★ 5
Exact Fit for 2001 BMW 325CI Convertible
Style: Gloss Black Single Slat, Size: E46（1999-2002）2-Door, Style: Gloss Black Single Slat, Size: E46（1999-2002）2-Door
Perfect fit for a 2001 BMW 325CI convertible.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
K
Verified Purchase
keith jones
Omaha, US
★★★★★ 5
Perfect fit
Perfect fit no issues it came sooner then expected and it looks great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2025
R
Verified Purchase
Ralph
San Leandro, US
★★★★★ 3
Won't lock in.
Looks nice but tabs won't lock in to existing grill mounts no matter how hard you try. 2012 BMW 650i
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 30, 2025

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