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Oct 24, 2025 · 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 …
Forum - Holley Performance Products Forums
Forum DescriptionIf this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start …
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 …
Dominator EFI - Holley Performance Products Forums
May 29, 2025 · Dominator EFI Tuning & TechIf this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link …
Revised Sniper 1 Downloads Page - Holley Performance Products …
Jan 11, 2024 · Holley have revised the EFI software/support download page and now have two sections: Sniper 1 version 1.3 Build 50 files and Sniper 1 version 2 files. As stated, the version …
Engine stalls after a few seconds. - Holley Performance Products …
Jan 9, 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 …
Universal Terminator X - Holley Performance Products Forums
Jun 21, 2021 · I have the Holley 550-936 Terminator X Kit, and added CNP harness 558-307. Running Dual Sync on a Mark IV BBC.
Terminator X EFI - Holley Performance Products Forums
Aug 15, 2025 · Terminator X EFI Tuning & TechIf this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the …
Brushless PWM Fans - Holley Performance Products Forums
Jul 25, 2023 · This thread is a pictorial summary of my use of SPAL Brushless cooling fans with Holley EFI, and linked from andrewb70 topic on same concept using larger, single GM OEM …
Useful Sniper EFI Information - Holley Performance Products Forums
Jul 21, 2017 · Holley EFI Video on Potential Problems: Potential Install Problems Holley EFI Video on Bad Wiring Practices: Bad Wiring Practices Holley EFI Video on Protecting Wiring …