Unlock High‑Flow Fuel Efficiency with the Tomei Genuine FPR Type L

For serious performance builds that demand dependable fueling under high boost and high horsepower — the Tomei Type L fuel pressure regulator is engineered for the job. When factory or stock regulators begin to limit your fuel system, the Type L delivers stable, adjustable rail pressure to ensure your injectors and pump get what they need.

Key Features & Benefits

• Oversized diaphragm design (Ø 50 mm) gives the Type L far more capacity than standard regulators — ideal for high‑flow setups. 

• Hard‑anodised billet aluminium body stands up to heat, vibration and harsh engine bay environments. 

• Multiple fitting options included: AN6 and #8 straight 1/8 NPT connectors for easier plumbing into aftermarket fuel systems. 

• Full adjustability from approximately 2.0 kgf/cm² (~29 psi) to 8.0 kgf/cm² (~114 psi) to fine‐tune your fuel pressure for your setup. 

• Universal compatibility across many tuning platforms — perfect when you’ve upgraded injectors, pump or are chasing big gains. 

Why Upgrade to Type L?
The OEM or stock regulator is generally fine for factory or mildly modified applications, but once you’ve boosted pump output or installed larger injectors the stock unit often becomes a bottleneck. The Type L is explicitly recommended for “very high hp applications (380 hp + and large fuel needs)”. 

Applications & Ideal Use

• High‐boost turbo setups or racing engines where fuel demands are significantly higher than stock

• Engines with upgraded injectors & fuel pumps, or conversions that require more fuel flow

• Any build where consistent, stable fuel rail pressure is critical for tuning or reliability

Installation Notes

• Ensure plumbing is correctly configured: inlet from fuel rail, outlet back to tank, vacuum signal to regulator. Some systems may need adaptors or custom brackets. 

• Pressure must be set and verified with a reliable gauge (not included) before full load tuning.

• Although described as "universal", confirm you have correct thread sizes and fittings for your vehicle’s fuel system.

• Not always compatible with E85 setups — check fitment for alcohol/meth use. 

Summary
If you’re building a high‑performance fuel system and want a regulator that matches your ambition rather than limiting it, the Tomei Type L is a professional‑grade upgrade built for serious flow, adjustment and durability.

Type S 185001 is recommended as factory replacement and increased fuel demands. 
Type L 185002 is recommended for very high hp applications ( 380 hp and above ) with large fuel needs