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  1. Holley EFI

    To start viewing messages, select the forum that you want to visit from the selection below. Please be aware that this is a community forum. Although Holley employees will take part in answering …

  2. V2 EFI software upgrade on Gen 1. - Holley Performance Products …

    Jun 12, 2024 · I just noticed that the V2 EFI software supports both Sniper 1 & 2, but I saw the note in the overview that say call Holley because V1.3 needs a special update. Is the update worth doing …

  3. Which Trans ICF for manual transmission VSS? - forums.holley.com

    Aug 5, 2024 · I have a Terminator X Max in a Fox Mustang with a manual transmission in. Since I have the Terminator X Max, I did wire up the VSS when I installed the system, but haven't worried about …

  4. Universal Terminator X - Holley Performance Products Forums

    Jun 21, 2021 · Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. Thus, Holley can not guarantee an …

  5. Rough idle, missing, etc., ALL SOLVED! - Holley Performance Products …

    May 24, 2024 · A story with a great ending! I finished my Factory Five Roadster about a year ago. I'm running a brand new Ford Racing 302 crate engine with a Holley Sniper. From day one, I've been …

  6. Holley Terminator X Max & Dakota Digital Gauges

    Jan 9, 2025 · Discussion on connecting Holley Terminator X Max with Dakota Digital Gauges and troubleshooting issues related to compatibility and wiring.

  7. Alternator Requirements - Holley Performance Products Forums

    Mar 15, 2024 · Greetings, obviously this is my first of likely many posts. I'm planning my build and I need to figure out if a 1-wire alternator 100 amp is going to do the trick with Sniper 2 and HyperSpark …

  8. Getting Dome Pressure close to Boost Pressure. - Holley Performance ...

    Jul 31, 2019 · Although Holley employees will take part in answering questions from time to time, your questions may or may not be answered by Holley personnel. Thus, Holley can not guarantee an …

  9. Updated Holley LS Main Harness Schematics

    Apr 3, 2023 · The 558-102 & 558-103 Holley harness schematics are the older version and don't help. I've done some searching and can't find one other than the Hemi version and I don't think it's close …

  10. Learning Mode - Holley Performance Products Forums

    Dec 12, 2017 · Just like a factory 2BBL carb works in the same basic way as a 4BBL Holley Double Pumper, the basic principle of the Sniper EFI is the same as with GM's '80s TBI. The Sniper is just …