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 answer …

Jun 25, 2025 · 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 …

After installing the Terminator X Max and the harness that was purchased from Holley, the car was working and everything is OK. After one week on the car, the car stopped working and the …

Oct 22, 2024 · Sniper 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 …

So my fuel pressure has been about 72 psi since I installed the system. I’ve got a 3/8” feed and 5/16” hard line return. I pulled the return and ran it into a can and it still ran at 65 psi. I have a …

Originally Posted by Holley V2 EFI Software Update Overview (When Holley EFI began using a Volumetric Efficiency % Table.) Volumetric Efficiency (VE%) Operation – The option of a …

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 answer …

Can someone please verify the correct relay wiring for a 5-pin relay? I assume Holley is correct in their manual, but everyone else online is showing it different. Holley says terminal 30 should …

The Holley Terminator, HP & Dominator EFI V5 EFI software/ECU firmware finally added an A/C activated option for the electric fans. The Holley Terminator X/X Max EFI V2 EFI software/ECU …

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 answer …