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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. 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 …

  3. 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 …

  4. Coolant Temperature Enrichment - Holley Performance Products Forums

    Jan 9, 2020 · Discussion on coolant temperature enrichment for Holley Sniper EFI systems, including tuning tips and community insights.

  5. Setting timing with Sniper. - Holley Performance Products Forums

    Sep 25, 2023 · 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 …

  6. Flex Fuel Sensor - Holley Performance Products Forums

    Jun 16, 2022 · I'm trying to install a Flex Fuel sensor on my Terminator X. To my understanding, to install the GM sensor that I just purchased from Pace Performance, the three wires off the sensor …

  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. Progressive Linkage makes Sniper EFI WAAAY Better - Holley …

    May 13, 2018 · The fact that Holley released new firmware for the Sniper EFI System recently slipped past most existing owners. And while I am not one to recommend upgrading firmware just because it …

  9. PCV & Breather Routing - Holley Performance Products Forums

    Aug 24, 2020 · Holley doesn't address the issue in the instructions, but EFI can be dangerous if the PCV valve fails since it automatically provides more fuel to go with the additional air.

  10. Configuring 3-wire Speed Sensors with HP EFI - Holley Performance ...

    Jun 8, 2022 · HP EFI Tuning & Tech We're trying to install two speed sensors, one for transmission input shaft RPM and driveshaft RPM. They're 3-wire, 5 volt sensors. Per the info I've found on this …