Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Air and Fuel› Fuel Injection Systems and Components - Electronic
Holley
HOLLEY MPFI LS2/LS3 LATE TRUCK 550-905-2
SKU: H00E 550-905-2
Advanced — 4+ hours
Overview
This EFI system is ideal for enthusiasts seeking complete engine control and self-learning fuel strategies. It comes pre-loaded with base maps for common LS engine configurations and provides advanced tuning capabilities through Holley EFI software.
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Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
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Available on iOS & Android
Specifications
| Brand | Holley |
| Part Number | H00E 550-905-2 |
Videos
How To: Install Terminator X EFI on any LS Engine
Terminator X EFI for LS Engines
Holley Terminator X Max install for newbies! Easier than you think!
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Holley EFI Power Tap Explained | Add Sensors Without Cutting Your Wiring Harness
Holley Terminator X Boost Control: Full Setup Guide (Wastegates, Onboard Air, MAC Valve & Tuning)
Holley 7" Digital Dash Unboxing and Terminator X Hookup, Firmware Issues!?
Fuel Injector Guide – Which Fuel Injector Is Right For You?
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Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
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