JBtuned EG Ek Civic DC Integra B-Series Full Tucked Fuel System

Product Description

JBtuned B-Series Full Tucked Fuel System

The JBtuned B-Series Full Tucked Fuel System is a complete fuel-line replacement for EG and EK Honda Civics and DC Acura Integras running a Honda B-Series engine.

This system is the natural next step beyond our B-Series Fuel Line Tuck Kit . Instead of retaining the factory chassis fuel lines, the Full Tucked Fuel System replaces the fuel plumbing from the tank to the engine and back with full-length JBtuned AN fuel-line assemblies.

The result combines a clean tucked engine-bay layout with a complete fuel-system configuration better suited for turbocharged, higher-horsepower, and performance-oriented B-Series builds.

Complete Fuel-Tank-to-Engine Fuel-System Replacement

Unlike an engine-bay-only fuel-line tuck kit, this system removes the factory fuel hard lines from the fuel-system flow path.

The JBtuned Full Tucked Fuel System provides complete feed and return plumbing from the fuel tank to the engine and back, allowing the fuel system to be configured around the needs of a modified B-Series combination rather than the limitations of the original chassis fuel lines.

This makes it a strong choice for:

• Turbocharged B-Series builds
• Higher-horsepower street cars
• Track and competition vehicles
• B16, B18, and B20 performance builds
• LS/VTEC and B20/VTEC combinations
• Customers upgrading beyond the factory Honda fuel lines
• Clean or tucked engine-bay builds that also require a complete performance fuel system

Vehicle & Engine Compatibility

Designed for B-Series-powered applications including:

• 1992-1995 Honda Civic EG
• 1996-2000 Honda Civic EK
• 1994-2001 Acura Integra DC

Common engine combinations include:

• B16
• B18
• B20
• LS/VTEC
• B20/VTEC
• Other compatible Honda B-Series combinations

Choose the Correct Fuel-Line Material

This system is available with two different hose constructions. Choose the version that matches the fuel you plan to use.

250 Series Rubber Hose – Pump Gasoline

Our 250 Series configuration uses standard rubber-core braided AN fuel hose and is intended for conventional pump gasoline.

Choose the 250 Series version when the vehicle will remain on pump gasoline and ethanol-fuel compatibility is not required.

350 Series PTFE Hose – Gasoline / E85 Compatible

Our 350 Series configuration uses PTFE fuel hose and is compatible with conventional pump gasoline as well as E85 and ethanol-based fuels.

Choosing PTFE does not mean you have to run E85. PTFE simply provides broader fuel compatibility.

Also remember that E85-compatible fuel lines do not automatically make a vehicle flex fuel. True flex-fuel capability requires a flex-fuel sensor along with compatible electronics and tuning.

Not sure which option you need? Read our guide to E85, PTFE fuel lines, and flex-fuel systems.

Feed & Return Line Options

The system is available with either a 6AN or 8AN feed line, depending on the fuel-system requirements of your build.

The return line remains 6AN in either configuration.

Your feed-line selection should be matched to the rest of the fuel system, including the fuel pump, hanger configuration, fuel rail, regulator, and overall power goals.

Large High-Flow Fuel Filter

The Full Tucked Fuel System uses the larger JBtuned/e85Freaks high-flow inline fuel filter found in our complete performance fuel-system packages.

This larger-body filter uses a 6-micron stainless-steel filter element and is designed for the increased fuel-system demands associated with performance applications.

The filter is incorporated into the complete JBtuned system so the customer receives a matched fuel-line and filtration package rather than having to determine the appropriate components separately.

Engineered Tucked Layout

This system retains the clean engine-bay routing of the JBtuned B-Series tuck configuration while extending the fuel system all the way back to the tank.

JBtuned configures the line assemblies, connections, and routing for the selected chassis and fuel-system options so you do not have to piece together a complete AN fuel system from individual components.

The complete hose assemblies are supplied ready for installation.

Fuel Rail Compatibility

The system can be configured for compatible OEM and aftermarket Honda B-Series fuel rails.

Select the fuel rail installed on your engine when ordering so JBtuned can configure the system for the appropriate rail connection.

If your fuel rail is not listed, contact JBtuned before ordering.

Fuel Pressure Regulator Compatibility

Fuel pressure regulator requirements depend on the fuel-line configuration you select.

250 Series Rubber-Hose Configuration

The standard 250 Series configuration can support compatible OEM-style and aftermarket rail-mounted fuel pressure regulator arrangements.

350 Series PTFE Configuration

The 350 Series PTFE configuration requires a fuel pressure regulator with an appropriate AN-style return connection.

The factory Honda fuel rail itself may still be retained, but the OEM regulator's hose-barb return connection is not appropriate for the PTFE return-line configuration.

Customers retaining an OEM-compatible Honda fuel rail can pair the system with an AEM Honda / Acura Adjustable Fuel Pressure Regulator for an AN-compatible regulator connection.

Rail-to-Regulator Connection

Depending on the fuel rail and regulator combination used on the vehicle, an additional rail-to-regulator connection may be required.

Use the Rail to Regulator Fitting option when ordering so the system can be configured for your selected components.

If you are unsure which option applies to your rail and regulator combination, contact JBtuned before ordering.

Fuel Pump Hanger Upgrade

The Full Tucked Fuel System is designed to integrate with the JBtuned Civic / Integra OEM Fuel Pump Hanger Upgrade Kit .

The hanger upgrade allows the factory Honda sending unit to be modified for use with the larger AN fuel system and upgraded fuel-pump configurations.

When selecting the hanger upgrade, choose the fuel pump being used so JBtuned can supply the appropriate configuration.

If your vehicle does not already have a properly modified fuel-pump hanger, adding the JBtuned hanger upgrade is strongly recommended.

Need a Fuel Pump?

A complete performance fuel system should be matched to a fuel pump capable of supporting the requirements of the engine.

JBtuned offers compatible fuel pumps for a range of B-Series performance applications.

Shop JBtuned Fuel Pumps

Under-Car Fuel-Line Mounting

Properly securing the new feed and return lines underneath the vehicle is an important part of installing a complete fuel system.

For a clean and secure installation, we recommend the JBtuned Fuel & Brake Line Holder Brackets .

The brackets are available in configurations designed around the different hose sizes and materials used with JBtuned fuel systems.

What Comes With the System

• Complete full-length fuel-feed line assembly
• Complete full-length 6AN fuel-return line assembly
• Large-body high-flow inline fuel filter
• 6-micron stainless-steel filter element
• Fuel-rail connection components for the selected configuration
• Fuel pressure regulator connection components based on selected options
• Required AN connection hardware for the configured fuel system

Exact line and fitting configurations vary depending on chassis, hose material, feed-line size, fuel rail, and regulator selections.

Fuel pump is not included unless selected.

Fuel pressure regulator is not included unless selected.

Fuel rail is not included.

Ordering Options Explained

Vehicle / Chassis

Select the vehicle receiving the fuel system so JBtuned can provide the correct chassis-specific line configuration.

Fuel Rail

Select the fuel rail installed on your B-Series engine.

Different fuel rails require different connection configurations.

Fuel-Line Material / Fuel Compatibility

Choose the hose construction based on the fuel you plan to use:

• 250 Series Rubber Hose: Pump gasoline only
• 350 Series PTFE Hose: Pump gasoline or E85/ethanol fuels

Choosing PTFE does not mean the vehicle has to run E85.

If you are unsure about the difference between fuel compatibility and flex-fuel capability, read our E85 vs. Flex Fuel vs. PTFE Fuel Lines guide .

Feed Line Size

Choose between a 6AN or 8AN feed line based on the requirements of your fuel system.

The return remains 6AN.

Fuel Pressure Regulator

Select the regulator configuration being used with the vehicle.

The 350 Series PTFE configuration requires an AN-compatible regulator connection.

Rail-to-Regulator Connection

Select the appropriate option based on the fuel rail and regulator installed on the engine.

If you are unsure which selection applies, contact JBtuned before ordering.

Fuel Pump Hanger Upgrade

Select this option if you need the JBtuned OEM fuel-pump hanger upgrade to integrate the sending unit with the new complete fuel system.

Want Flex-Fuel Sensor Integration?

The JBtuned B-Series Full Tucked Fuel System is a complete performance fuel system, but it is not specifically configured around a flex-fuel sensor.

Choosing the 350 Series PTFE option makes this system compatible with E85, but E85 compatibility and flex-fuel capability are not the same thing.

If you specifically want a complete fuel system with the plumbing and layout configured around flex-fuel sensor integration, choose the JBtuned B-Series Complete Flex-Fuel System .

Both systems are designed for performance-oriented builds and can be used with conventional pump gasoline.

The Full Tucked Fuel System can also be used with E85 when the 350 Series PTFE configuration is selected.

The main difference is that the dedicated Flex-Fuel System uses a fuel-line layout specifically configured around integrating a flex-fuel sensor.

Need more clarification? Read: E85 vs. Flex Fuel vs. PTFE Fuel Lines – What’s the Difference?

Installation Information

This is a complete aftermarket fuel-system installation and replaces the factory chassis fuel plumbing from the tank to the engine and back.

Installation requirements vary based on chassis, fuel pump, hanger, fuel rail, regulator, hose type, and other components installed on the vehicle.

All fuel lines must be properly routed, secured, and protected from exhaust heat, moving components, and potential abrasion.

Verify all fuel-system connections for leaks before starting or operating the vehicle.

Professional installation is recommended for customers who are not experienced with complete aftermarket fuel systems and AN plumbing.

Questions About Your Fuel-System Setup?

If you are unsure which configuration is appropriate for your build, contact JBtuned before ordering.

Send us your vehicle, year, engine, fuel type, fuel pump, fuel rail, regulator, and approximate power goals, and we can help determine the appropriate system configuration.

Professional installation recommended.

For off-road use only.