When tuning a turbocharged engine, you often hear about injectors, fuel pressure, and pumps. One term that comes up repeatedly is LPFP – or Low Pressure Fuel Pump . But what exactly is an LPFP, and why is it such a crucial component in performance upgrades?
What does LPFP mean?
LPFP stands for Pressure Fuel Pump . This pump is usually located in or near the fuel tank and its function is to pump fuel from the tank to the high-pressure fuel pump (HPFP)
The LPFP acts as a 'precursor' in the fuel system, ensuring that sufficient fuel always reaches the engine – at a constant, low pressure.
Why is an LPFP important?
A properly functioning LPFP is essential for the operation of modern engines with direct injection and turbochargers . Especially in tuned cars, where fuel consumption and turbocharger pressure increase, the standard LPFP be too weak.
Insufficient fuel pressure may cause the following problems:
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❌ Loss of power
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❌ Too lean mixture (dangerous for the engine)
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❌ Pinging or detonation
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❌ Error codes or emergency mode
That's why many tuners opt for an upgraded LPFP when switching to a bigger turbo, ethanol (E85), or advanced ECU software.
What are the benefits of an upgraded LPFP?
✔️ Stable fuel pressure at higher power
✔️ Support for E85 or racing fuels
✔️ Better performance under full load
✔️ Prevents lean running and engine damage
✔️ Essential for Stage 2+ and higher tuning
When do you need an LPFP upgrade?
Upgrading your LPFP is highly recommended if you:
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Perform ECU tuning with higher turbo pressure
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Switching to ethanol (E85)
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Installing larger injectors or an HPFP upgrade
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Are you experiencing fuel cuts at full load?
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Going towards Stage 2 or Stage 3 tuning
Without an adequate fuel supply, your engine management system will fail – and you want to avoid that.
JT Products – Specialist in fuel systems
At JT Products, we offer LPFP upgrades from top brands. Our experience in tuning and motorsports will help you choose the right pump for your setup – whether you run on gasoline, E10, or E85.
We offer not only parts but also tailored technical advice . This way, you can be sure your fuel system is working optimally.
Frequently Asked Questions about LPFP
Is an LPFP the same as a fuel pump?
Yes, but specifically, the pump that operates at low pressure and "feeds" fuel to the HPFP. The latter provides the high pressure to the injectors.
Can I install an LPFP myself?
Often, yes, although this requires access to the fuel tank. In modern vehicles, installation is easier thanks to plug-and-play kits.
Do I always need an HPFP upgrade when replacing my LPFP?
Not always. But for higher power outputs, a combination upgrade of both LPFP and HPFP is often necessary for optimal performance.
