Aeromotive EFI Fuel Pressure Regulator — Adjustable 40–75 PSI, Boost-Referenced, ORB-06 Ports for High-Flow Systems

The Aeromotive 13129 EFI fuel pressure regulator is an adjustable, boost-referenced return-line regulator that maintains 40–75 PSI and supports high-flow systems up to 1000 HP.

This compact, precision-machined regulator gives tuners and performance builders a dependable way to control fuel pressure in electric fuel-injected engines. With ORB-06 fittings for neat plumbing, a dedicated gauge port for accurate monitoring, and a 1:1 boost reference via the vacuum port, the 13129 is engineered for tight engine bays and serious power applications without adding bulk.

How does this regulator keep fuel pressure steady under boost?

The regulator uses a boost-referenced vacuum port so fuel pressure increases at a 1:1 ratio with manifold boost, preserving proper fuel flow as boost rises. Internals are precision balanced to respond quickly to changes in boost or engine demand, which helps maintain consistent injector performance.

• Boost-referenced diaphragm gives 1:1 boost-to-fuel-pressure response
• Adjustable range from 40 to 75 PSI for tuning flexibility
• Stable control for high-flow pumps supporting up to 1000 HP

What plumbing and monitoring options does it provide?

The 13129 features two ORB-06 inlet ports and one ORB-06 return port to simplify hose routing in cramped engine compartments. A dedicated 1/8" NPT gauge port lets you mount a fuel pressure gauge or sensor for live feedback during tuning sessions.

• Two ORB-06 inlet ports for flexible fuel feed layouts
• One ORB-06 return port for tidy routing back to the tank
• 1/8" NPT port for pressure gauge or sensor installation

How easy is it to install and tune on a performance car?

The regulator's compact footprint and standardized ORB fittings make it straightforward to install even in tight engine bays. The adjustable range covers common EFI setups, and the gauge port simplifies dialing in precise fuel pressure with the engine running.

• Compact design fits tight locations without special brackets
• Adjustable spring mechanism for quick pressure changes
• Clear gauge port allows accurate on-vehicle adjustments

What durability and engineering standards back this product?

Aeromotive applies aerospace-derived manufacturing practices and track-proven engineering to its fuel system components. The regulator is built from robust materials and precision-machined to deliver repeatable performance under demanding conditions.

• Precision machining and quality control rooted in aerospace processes
• Designed and validated by experienced in-house racing engineers
• Manufactured for consistent, long-term operation in high-flow systems

Who this is for: The Aeromotive 13129 is aimed at performance tuners, race teams, and enthusiasts running electric fuel injection who need a compact, boost-referenced regulator with a wide adjustable range. It suits builds requiring neat fuel routing and accurate pressure feedback—especially turbocharged or supercharged engines seeking reliable fuel control up to 1000 HP.