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Holley EFI 550-903 Terminator X Ls1 MPFI System

About this product

Product Identifiers

BrandHolley
Manufacturer Part Number550903
GTIN0090127060797
UPC0090127060797
eBay Product ID (ePID)3031160709

Product Key Features

Fuel TypeGasoline
FeaturesEasy Installation
Performance PartYes
OE/OEM Part Number550-903

Ratings and reviews

4.2
5 product ratings
  • 4 users rated this 5 out of 5 stars
  • 0 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 1 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

  • Excellent quality product that has great functionality despite the price target.

    The quality of parts especially the wiring harness is excellent. It was straight forward to install and fired up first time on my engine setup. Take time and read the product description. Download the manuals and free tuning software. This is because there are limited choices for certain sensors that the software is setup for in order to keep the price down. You will very likely need at 1 or 2 sensors in addition to the base price. The self learn function works great (fuel only) and could save you time and money in dyno tuning.

    Verified purchase: YesCondition: New

  • ls1 computer fix

    Only set up I could get use on My project. Don't have to have speed sensor from trans and I can use aluminum flywheel. self tuning.

    Verified purchase: YesCondition: New

  • Holley

    Great people to deal with. Thanks again

    Verified purchase: YesCondition: New

  • Efi

    Great product

    Verified purchase: YesCondition: New

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