Fk8 Fl5 DE5 High flow fuel line service/exchange

Description

The 70 core charge will be returned upon receiving your oem in good condition.

If you are running upgraded direct-injection pumps (like the XDI or Full-Race units) and massive injectors (1450cc to 2000cc+), the restriction often moves to the high-pressure hardline connecting the High-Pressure Fuel Pump (HPFP) to the fuel rail.

Internal Geometry & Boring

• Proprietary Smooth-Bore Reaming: Unlike DIY setups that are hand-drilled (which leaves internal scoring and irregular steps), FK8TD utilizes a specialized boring process to enlarge brand-new OEM Honda high-pressure lines. This creates a completely uniform, mirror-smooth inner diameter.

• Dual-Angled Entry Taper: The line entry point features a custom dual-angle taper. This taper drastically improves the fluid transition as fuel leaves the HPFP discharging into the rail.

Performance & Calibrating Benefits

• Pulsation Dampening: The internal volume and smooth finish are precisely calculated to help absorb and dampen the severe pressure pulsations generated by the mechanical pumping action of high-volume DI pumps.

• HPFP Duty Cycle Drop: Real-world logging and data show up to a 10% reduction in high-pressure pump duty cycle compared to standard hand-drilled alternatives. This gives your high-pressure pump more headroom, cleaner fuel atomization, and better rail pressure control at high RPM under maximum target load.

The shipping address is

Fk8 Tuning and Development

11109 Highway 707 unit c

Murrells Inlet South Caroline 29576

Return shipping included

We are not responsible for shipping delays so please do not contact us if there is shipping delay. Please contact the shipping service you used.

Must be done within 45 days for core