The 6 Best Carburetor Bypass Regulators (2022 reviews)

We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a regulator. The Holley Fuel Pressure is exactly that - it's a simple regulator that hits all the right notes. The high fuel pressure is highly recommended and it works great. The Manufacturer says: From propelling the ls-, coyote-, and gen 3 hemi-swap trends, to continuously innovating late-model and vintage vehicle performance, Holley’s commitment to its customers and their cars is at the core of everything we do. Further, it comes with exact part, is designed for easy installing and it works flawlessly.

The regulator is good for fuel filter and it works perfectly. Also, it can be used in systems with a return line back to the fuel tank. Lastly, the holley fuel pressure is designed to precisely control the fuel pressure from the fuel pump to the carburetor.

Almost all buyers quickly discovered that the regulator is great for electric to carb swaps. Further, they also found that the regulator can be used with gas or diesel. And, they strongly agree that the regulator has a 3/8 thread port out of the bottom. To sum up, many buyers have used the high fuel pressure for more than a few months without letup, and it shows no sign of giving up.

Top Customer Quotes:

It is easy to adjust the pressure going into the carburetor.
3/8” npt ports (1 in, 1 out, 1 bypass or return).
Adjustable fuel regulation from 4-1/2 to 9 psi.
This features 3/8" npt in/out ports and a 3/8" npt return port.

Best For Easy Packaging: Aeromotive Standard Spring

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We would, of course, be remiss if we didn't mention Aeromotive Standard Spring for daily usage. The aeromotive standard spring provides the ultimate, dynamic fuel pressure control. To serve a dual purpose, universal regulator for electric or carbureted and street or strip applications. Further, it is good for good quality and it is for easy packaging.

The regulator is great for top quality and it looks great. Lastly, the aeromotive standard spring is a true high - performance aftermarket manufacturer specializing in fuel delivery and fuel delivery components.

Most customers found that the regulator works well as well, plus it is a good value for the cost. And, a few strongly agree that the regulator is made by rotating the top with an allen wrench. In addition, they also found that the regulator comes with another spring for higher pressures required by efi.

Top Customer Quotes:

This aeromotive regulator is more than twice the price of the MR gasket.
Fuel pressure rises on a 1:1 ratio when referencing boost.
This works as advertised and it works great.
This is for super fast shipp and it works perfectly.

Best For Not Much Money: Holley Carburetor Bypass Regulator

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The Holley Carburetor Bypass Regulator's material feels more premium than its price would suggest. Moreover, this works as advertised and it makes for easy installation. Holley does it again with their new die cast aluminum pass style fuel pressure regulators. Most importantly, the holley carburetor bypass regulator works great, works perfectly and it is durable.

Most buyers agree that the regulator is a great little regulator for not much money, responds well to boost signal. Moreover, a few also found that the regulator can be used on an old ford flathead engine and carb. Overall, the tone of buyers is very positive and we believe that the regulator suits the purpose.

Why We Like This:

1/8" npt boost reference – 1:1.
3/8” npt inlet, outlet, and return ports.
1/8" npt barb fitting for boost reference port included.

Best For Emission Code: Southwest Speed Carburetor Bypass Regulator

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The Southwest Speed Carburetor Bypass Regulator is satisfactory and appropriate and fits well with your daily purpose. The southwest speed carburetor bypass regulator can be used in systems with a return line back to the fuel tank. Each holley fuel pressure regulator is fully adjustable, so regulating the fuel pressure to your engine 's needs is a simple task. Moreover, the regulator is designed for use with an electric fuel pump with a return line in the system.

Lastly, the southwest speed carburetor bypassregulator is shiny and it is great for emission code.

Why We Like This:

If you are using a mechanical fuel pump, use the 12.
This features 3/8" npt in/out ports and a 3/8" npt return port.
Brand new holley carbureted bypass fuel pressure regulator, shiny finish (part #12-803bp).

Best For High Quality: Aeromotive Carburetor Bypass Regulator

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Compared with other regulators in this category, the Aeromotive Carburetor Bypass Regulator has a convenient design. The aeromotive carburetorbypass regulator allows any car or truck to affordably convert from electric to a standard carburetor. Make sure this fits by entering your model number. In addition, the regulator has outlet ports, is blue, it is black and has a dual regulator design.

The regulator allows use of the stock efi, in-tank fuel pump. Finally, the aeromotive carburetor bypassregulator is a true high performance aftermarket manufacturer specializing in fuel delivery and fuel delivery components.

Almost all customers quickly discovered that the regulator is perfect for electric to carburetor conversion. And, a few strongly agree that the regulator is perfect by first reducing the pressure to 25 psi and returning to the tank. Also, they strongly agree that the 2nd stage further reduces the pressure to 6.5 psi for the 4bbl carb.

Why We Like This:

Efi to carbureted regulator with 3/8-npt ports.
Controls carburetor pressure from 5-9 psi.
Controls pump/line pressure from 8-16 psi.
It is great for high quality and it is compact.

Best For Boost: Edelbrock Carburetor Bypass Regulator

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Compared with other regulators in this category, the Edelbrock Carburetor Bypass Regulator has a convenient design. The edelbrock carburetorbypass regulator will hold fuel system pressure for at least 20 minutes after pump shutdown. Use a fuel pressure regulator bypass style 160gph red. These fuel pressure regulators are machined from aircraft quality aluminum for those who demand the best.

Most importantly, the edelbrock carburetor bypass regulators are compatible with all grades of gasoline, ethanol, methanol and e85 fuels.

Overall, buyers found this to be one of the best regulators for daily purposes.

Why We Like This:

One of the newcomers and featured product.
New and hot releases.