Aeromotive

The best Aeromotive fuel pump depends on the build. The 340 Stealth in-tank pumps are the smart pick for E85 daily drivers and mild turbo setups — drop-in-style flow with ethanol-compatible internals. The A1000-series pumps and adjustable A1000 Gen-II regulators are built for high-horsepower EFI builds that outrun stock fuel delivery. Size the pump to peak fuel demand, then match it with a regulator that can hold steady base pressure under boost.

Aeromotive's catalog is the classic fuel-system triangle: pumps that move fuel, regulators that set pressure, and the filtration and plumbing that connect them. In-tank pumps like the 340 Stealth series support E85 and install in the factory hanger on many applications, while universal external pumps like the A1000 feed dedicated race fuel systems with return plumbing. Adjustable regulators such as the 13129 and the A1000 Gen-II 13138 let tuners set base fuel pressure and reference boost, so pressure rises with manifold pressure on forced-induction cars. When shopping, confirm the pump is rated for the fuel you run — ethanol demands compatible internals and more flow than gasoline at the same power.

Aeromotive is a dedicated fuel-system manufacturer whose A1000 pump became a staple of high-horsepower import and domestic builds. The brand's line spans in-tank stealth pumps like the 340 series, external A1000 pumps, adjustable EFI regulators, and E85-rated components, all engineered around consistent pressure and volume rather than peak numbers alone. For builders stepping up from a stock fuel system, Aeromotive's application-specific pumps and universal regulators cover most street-to-strip fuel plans.

Grams Performance handles the injector side of the same equation — flow-matched injector sets from 550cc street sizes up to 2200cc race hardware, plus drive-by-wire throttle bodies for the BRZ, FR-S, and 86. Fuel Injector Clinic is another injector specialist, known for data-matched sets with application-specific tuning data. Pair any of these with an Aeromotive pump and regulator for a complete high-flow fuel system.

Start with the A1000 Gen-II adjustable EFI fuel pressure regulator for boost-referenced base pressure, or the 340 Stealth E85 in-tank pump as a fuel-system foundation. Browse the full fuel system category and fuel pressure regulators for the supporting pieces. For monitoring guidance after a fuel upgrade, read what to monitor on your Accessport — fuel trims, AFR, and knock tell you whether the fuel system is keeping up.

Do I need a fuel pressure regulator with an aftermarket pump?

Return-style systems need a regulator to hold consistent pressure. Adjustable regulators also let your tuner set base pressure and reference boost on forced-induction cars.

Can I run E85 with an Aeromotive pump?

Pumps sold as E85-compatible, like the 340 Stealth E85 series, have internals rated for ethanol. Verify the injectors, lines, and regulator are also ethanol-safe, and tune for the fuel.

In-tank or external pump?

In-tank pumps are quieter, stay cooler in fuel, and suit most street builds. External pumps like the A1000 suit dedicated high-flow systems and simplify service at the cost of noise and plumbing complexity.

Will I need a retune?

Yes. Any fueling change — pump, regulator, or injectors — alters delivery and requires a tune. Watch fuel trims and AFR on the first logs.