Question about my "returnless" Holley Sniper V1 system.
Aug 14, 2024 · I believe the returnless pumps don't have a provision/fitting for a return line so you may need to fabricate a return into the tank. If you attempt to use the regulator in the current …
Sniper With Returnless - Holley Performance Products Forums
Feb 3, 2021 · If you're running a Sniper unit that does not contain a built-in regulator and you're also running a returnless system and are having issues with erratic AFRs, please read on. …
No fuel flow from Holley returnless pump. - forums.holley.com
Nov 11, 2024 · Another step backwards. Was starting to get the Holley Sniper 1 system ready to fire, I setup to flush the fuel line. The pump ran, but no fuel flow from the Holley in-tank …
Sniper 2 EFI (Returnless) Dual Tanks On K10 - Holley Performance ...
Apr 17, 2025 · I've installed a Sniper 2 EFI (Returnless) system with a HyperSpark and PDM about a year in a half ago on my ‘74 Chevy K10. But I could NOT get this returnless system to …
Fuel & Return Line Questions - Holley Performance Products Forums
Sep 27, 2020 · Another option is the retrofit in-tank module, maybe even the returnless style. It's a bit pricey, but will probably be the cleanest and in the end best solution?
HP EFI & Returnless Fuel System - Holley Performance Products …
Aug 21, 2015 · So I'm thinking on going 'returnless' to simplify everything, using a Radium Auto FST-R Fuel Surge Tank with Integrated FPR, and them using the existing pumps to lift the into …
Holley Sniper warm/hot start issues.
Nov 13, 2021 · A few people have experienced odd running behavior when starting a returnless system when hot which is likely warm fuel, but I can't recall anyone with a no start, but it’s …
Bogs Down on Load - Holley Performance Products Forums
Sep 30, 2023 · Is the tank pump internally regulated (returnless)? If so, are you also running a return line from the Sniper fuel pressure regulator? Fuel pressure regulators are not designed …
Is this a problem unit or what? - forums.holley.com
People seem to have success with Holley returnless fuel systems. A lot of grief would be saved if people didn't try to tune Snipers with fuel problems. Fuel pressure gauge can be very helpful. …
Sniper Issues - Holley Performance Products Forums
Jul 15, 2022 · If it's internally regulated and setup as returnless, you shouldn't run the return through the Sniper fuel pressure regulator. If you were able to hook up a return line then the …