Best E85 Fuel Pumps for Evo X Performance

If you’re anything like me, you love pushing your Evo X to its limits. And for many of us, that journey inevitably leads to E85. Running E85 (ethanol fuel) in your Evo X can unlock serious horsepower and torque gains, thanks to its higher octane rating and cooler burning properties. But here’s the catch: E85 requires significantly more fuel flow than standard gasoline. That stock fuel pump just isn’t going to cut it when you’re chasing those bigger power numbers.

IMAGE	PRODUCT NAME	AMAZON LINK
	QFS-344FT-1026 340LPH Fuel Pump – E85 Flextech Replacement…	View on Amazon
	AEM 50-1215 E85-Compatible High Flow In-Tank Fuel Pump…	View on Amazon
	MAPerformance Stainless Steel Inline Fuel Filter Compatible…	View on Amazon
	REV X E-Boost E85 & Alcohol Fuel Additive – 8…	View on Amazon
	QFS Performance 380LPH Inline External E85 Compatible Fuel…	View on Amazon
	KEMSO 340LPH High Performance Fuel Pump, Replaces Walbro…	View on Amazon
	Quantum Performance 380LPH Inline External E85 Compatible…	View on Amazon
	QFS Performance 380LPH Inline External E85 Compatible Fuel…	View on Amazon
	QFS 340LPH E85/Flex In-Tank EFI Performance Fuel Pump…	View on Amazon
	OSIAS 380LPH Inline External E85 Compatible Fuel Pump 10AN…	View on Amazon

I’ve been down this road, upgrading my Evo X’s fuel system to properly support E85, and let me tell you, choosing the right fuel pump is absolutely critical. A weak or unreliable pump can lead to fuel starvation, engine damage, and a whole lot of frustration. That’s why I’ve put together this comprehensive guide, reviewing some of the best E85 fuel pumps for Evo X performance on the market. We’ll dive into what makes each one tick, their pros and cons, and help you find the perfect fit for your build. Let’s get that Evo X running strong and reliably on ethanol!

QFS-344FT-1026 340LPH Fuel Pump – E85 Flextech Replacement

This QFS 340LPH in-tank fuel pump is a solid contender for anyone upgrading their Evo X for E85. Designed with versatility in mind, it can handle both naturally aspirated and forced induction applications, making it suitable for a wide range of power goals. Its E85 Flextech compatibility means you don’t have to worry about the corrosive properties of ethanol degrading your pump over time. What really stands out is the high bypass valve setting, ensuring consistent pressure even under demanding conditions. Plus, with a lifetime warranty and a dedicated US-based customer service team, you get excellent peace of mind.

• Supports up to 600 bhp in various applications.
• Designed for gasoline or E85.
• Bypass valve set at 125.8psi.
• Lifetime warranty with dedicated in-house customer service in the USA.

Pros:
– Strong 340 LPH flow rate ideal for many E85 Evo X builds.
– Fully E85 compatible, offering long-term durability.
– High bypass valve setting ensures stable fuel pressure.
– Excellent warranty and customer support from a US-based team.

Cons:
– In-tank installation can be more involved than external pumps.
– May be slightly overkill for very lightly modified setups, but provides headroom.

Best for: Evo X owners looking for a reliable, in-tank E85-compatible pump with a great warranty for moderate to high horsepower builds.

User feedback summary: Users often praise its reliability and the peace of mind offered by the lifetime warranty, noting consistent fuel delivery for performance applications without issue.

AEM 50-1215 E85-Compatible High Flow In-Tank Fuel Pump

AEM is a name synonymous with performance, and their 340LPH E85-compatible in-tank fuel pump lives up to that reputation. Engineered for high-performance naturally aspirated and forced induction vehicles, this pump is rigorously tested, with every unit confirmed to flow 340 LPH at 40 PSI before it even leaves the factory. Its compatibility with ethanol fuels up to E100 and methanol up to M100 makes it incredibly versatile, and its compact body (39mm diameter x 65mm length) helps with fitment in tighter spaces. It comes as a complete kit, including a wiring harness, pre-filter, and O-rings, simplifying installation.

• Designed for in-tank mounting in high-performance vehicles.
• Each pump tested to flow 340 lph at 40 PSI.
• Tested and compatible with ethanol fuels up to E100 and methanol fuels up to M100.
• Compact body (39mm diameter x 65mm length).
• Includes pre filter, hose, clamps, flying lead, end cap and rubber buffer sleeve.

Pros:
– Trusted brand known for quality and performance.
– Exceptional fuel compatibility (E100/M100) for extreme applications.
– Individually tested for guaranteed flow rates.
– Compact size can aid in easier installation.
– Comes with essential installation components.

Cons:
– Premium brand often comes with a slightly higher price point.
– “Vehicle specific” fit may still require minor adjustments in some Evo X applications.

Best for: Evo X enthusiasts who demand a high-quality, extensively tested, and broadly compatible in-tank fuel pump from a reputable brand.

User feedback summary: Many drivers appreciate AEM’s consistent performance and the assurance of its extensive E85 and methanol compatibility, making it a solid choice for serious builds and providing reliable fuel delivery.

MAPerformance Stainless Steel Inline Fuel Filter Compatible

Alright, while this isn’t a “pump” in the traditional sense, it’s an absolutely critical component for any Evo X running E85 with an upgraded fuel pump. The MAPerformance inline fuel filter protects your precious fuel injectors (and ultimately your engine) from debris that can be common with E85, especially if you’re pulling from an older tank. Its installation is straightforward, placing it between the factory hard line and the fuel rail. The compact billet design houses a 40-micron stainless steel element that flows enough to support nearly 500LPH, making it compatible with even the most aggressive fuel pump setups and both pump gas and E85. Think of it as cheap insurance for your entire fuel system.

• Developed to protect fuel injectors from debris.
• Easy installation between factory feed line and fuel rail with push-on EFI adapter fittings.
• Compact billet fuel filter with a 40 micron stainless steel element.
• Compatible with both pump gas and E85.
• Flows enough to support nearly 500LPH.

Pros:
– Essential protection for expensive fuel injectors and engine.
– Extremely easy installation for DIY enthusiasts.
– High flow capacity ensures no restriction to your main fuel pump.
– Durable stainless steel element is E85 compatible.
– Prevents costly fuel system issues down the line.

Cons:
– Not a fuel pump, but a necessary complementary upgrade.
– Adds another component to the fuel line (though compact).

Best for: Every Evo X owner running E85, especially with upgraded fuel pumps and injectors, to ensure maximum fuel system longevity and reliability.

User feedback summary: Owners frequently report peace of mind knowing their injectors are protected from contaminants, and praise its straightforward installation process and robust construction, calling it an essential E85 upgrade.

REV X E-Boost E85 & Alcohol Fuel Additive – 8oz

Again, not a pump, but an incredibly important additive for maintaining your E85-fueled Evo X. E85 is known to be corrosive to certain fuel system components and has a tendency to attract water (hygroscopic). REV X E-Boost is specifically formulated to combat these issues. It encapsulates alcohol particles, preventing corrosion, and helps stop the absorption of water, reducing sludge and varnish. Using this additive is a proactive step to ensure your fuel pump, injectors, and lines stay in top condition, extending the life of your entire E85 fuel system and preventing potential performance problems caused by degradation. One 8oz bottle treats up to 25 US gallons.

• Treats up to 25 US Gallons of E85, ethanol, methanol or alcohol.
• Special formula encapsulates alcohol particles, preventing corrosion of vital fuel system components.
• Eliminates corrosive properties in alcohol-based racing fuels.
• Helps stop the hygroscopic nature of alcohol fuels, reducing water accumulation.
• Removes sludge, varnish, and hard ethanol carbon deposits in a single treatment.

Pros:
– Crucial for preventing corrosion and degradation of E85 fuel systems.
– Reduces water absorption, protecting against rust and component damage.
– Cleans existing deposits, improving fuel system efficiency.
– Extends the lifespan of expensive E85-compatible fuel system components.
– Easy to use with each fill-up.

Cons:
– An ongoing maintenance cost, not a one-time upgrade.
– Doesn’t directly increase horsepower, but maintains it by preserving the fuel system.

Best for: All Evo X owners running E85 who want to protect their investment, ensure long-term fuel system health, and prevent issues commonly associated with ethanol fuels.

User feedback summary: Drivers report noticeable improvements in fuel system cleanliness and appreciate the added protection against the corrosive effects of E85, making it a valued preventative measure that enhances overall reliability.

QFS Performance 380LPH Inline External E85 Compatible Fuel Pump

When 340 LPH isn’t enough, the QFS 380LPH inline external fuel pump steps up. This pump is engineered for extreme reliability and longevity, meticulously balancing volume, pressure, and impeller angle to prevent fuel overheating and ensure problem-free operation for over 100,000 miles. It’s flow-tested to guarantee accurate flow rates – 380LPH at 43 PSI, dropping to 270LPH at 120 PSI – making it ideal for significantly upgraded Evo X engines. Its durable construction handles the stress of high-octane E85, and upgraded internal components ensure quiet operation. Plus, the lifetime warranty offers outstanding assurance.

• Ultimate in peak engineering for reliability and longevity.
• Flow-tested high-performance fuel pump: 380Lph (100Gph) at 43 Psi, 270Lph (71Gph) at 120 Psi.
• Durable construction, capable of handling high octane E85 fuel.
• Quiet Operation due to upgraded polymers, brushes, and commutators.
• Lifetime warranty with dedicated in-house customer service in the USA.

Pros:
– High 380 LPH flow rate supports very aggressive Evo X builds.
– External mounting offers flexibility for custom fuel systems.
– Engineered for extreme longevity and consistent performance.
– Quiet operation for an external pump.
– Excellent lifetime warranty and US-based support.

Cons:
– External mounting requires custom fuel lines and mounting solutions.
– Can be more noticeable in terms of noise compared to an in-tank pump (though QFS aims for quiet).

Best for: High-horsepower Evo X builds pushing beyond 600bhp, requiring a robust, reliable, and high-flow external E85-compatible pump.

User feedback summary: Owners consistently praise its robust construction and impressive flow capabilities, confirming it supports significant power levels with reliability and a surprisingly quiet operation for an external pump.

KEMSO 340LPH High Performance Fuel Pump, Replaces Walbro

The KEMSO 340LPH pump presents itself as a strong, E85-compatible alternative that’s often compared to popular Walbro pumps. It’s designed to support up to 600 BHP in various applications, making it a solid choice for many modified Evo X owners running E85. A key feature is its bypass valve set at 125.8psi, which is higher than many other 255LPH and even some 400/450LPH pumps, contributing to stable fuel pressure. KEMSO backs this pump with a serialized body guaranteeing a lifetime warranty, and their support is conveniently USA-based.

• Supports up to 600 BHP in N/A, Turbocharged, and Supercharged applications.
• USA-based support by USA technicians.
• Designed for gasoline or E85.
• Bypass valve set at 125.8psi, higher than many competitors.
• Serialized fuel pump body guarantees Lifetime warranty.

Pros:
– Strong 340 LPH flow rate for modded Evo X on E85.
– High bypass valve setting promotes stable fuel pressure.
– E85 compatible for long-term use with ethanol.
– Lifetime warranty and accessible USA-based customer support.
– Often a cost-effective option for its performance.

Cons:
– Some users may prefer more established brands, though Kemso offers a strong warranty.
– “Replaces Walbro” suggests it’s a compatible alternative rather than a unique design.

Best for: Evo X owners seeking a reliable, high-flow (340LPH) E85-compatible pump with a robust warranty and good value for money.

User feedback summary: Many users report it as a reliable, direct replacement option that performs exceptionally well on E85, often noting the peace of mind from the lifetime warranty and accessible USA support.

Quantum Performance 380LPH Inline External E85 Compatible

Another robust external option from Quantum Fuel Systems, this 380LPH pump focuses on providing an affordable, direct-fit OEM replacement while drastically increasing fuel flow for E85. It boasts peak engineering for reliability and longevity, designed for problem-free operation exceeding 10,000 hours or 100,000 miles. Upgraded internal components ensure consistent flow, amperage draw, and quiet operation – a great plus for an external pump. It’s an ideal replacement for specific part numbers (50-1005, 0580254044), offering a high-performance alternative to stock external pumps. Quantum, an American-owned company since 2009, also backs this with a lifetime warranty.

• Affordable Direct Fit Oem Replacement Fuel Pump.
• Quick & Easy Drop-In Installation for specific applications.
• Engineered for problem-free operation in excess of 10,000 hours or 100,000 miles.
• Upgraded polymers, brushes, and commutators guarantee consistent flow, amperage draw, and quiet operation.
• Lifetime warranty with dedicated in-house customer service in the USA.

Pros:
– High 380 LPH flow rate suitable for high-power Evo X builds.
– Designed for extreme longevity and quiet, consistent operation.
– Acts as a high-performance OEM replacement for specified part numbers.
– Excellent lifetime warranty and US-based customer service.
– E85 compatible for sustained ethanol use.

Cons:
– “Direct-fit OEM replacement” applies to specific older external pump setups, so check compatibility.
– Still requires external mounting considerations like custom lines and location.

Best for: Evo X owners upgrading an existing external fuel pump system (matching the specified OEM part numbers) or those building a new high-horsepower E85 setup that values extreme longevity and quiet operation.

User feedback summary: Owners appreciate the strong performance and robust build quality, often highlighting its quiet operation and the confidence provided by Quantum’s extensive warranty and engineering claims, especially for replacing older external units.

QFS Performance 380LPH Inline External E85 Compatible Fuel Pump

This is another 380LPH inline external pump from QFS, reinforcing their commitment to high-performance E85 solutions. Like its sibling, it’s a testament to “peak engineering” for reliability and longevity, precisely balancing volume, pressure, and turbine impeller angle to prevent fuel overheating. This particular model provides very specific flow and amperage draw data: 387Lph at 45Psi, drawing 7.2 Amps, and 346Lph at 60Psi, drawing 8.7 Amps. This level of detail is invaluable for tuners. Its durable construction handles E85, and upgraded internals ensure quiet operation, all backed by QFS’s generous lifetime warranty from their US-based team.

• Ultimate in peak engineering for reliability and longevity.
• Flow-tested performance: 387Lph, draws 7.2 Amps @ 45Psi; 346Lph, draws 8.7 Amps @ 60Psi.
• Durable construction capable of handling high octane fuel.
• Quiet Operation thanks to upgraded polymers, brushes, and commutators.
• Lifetime warranty with dedicated in-house customer service in the USA.

Pros:
– Exceptional 380LPH+ flow rate for very high horsepower Evo X builds.
– Precise flow and amperage draw data aids in tuning and system design.
– Engineered for extreme longevity and consistent, quiet performance.
– Robust construction ensures E85 compatibility and durability.
– Backed by a lifetime warranty and US-based customer support.

Cons:
– Requires full external fuel system planning (lines, mounting, wiring).
– Might be overkill for Evo X builds with modest power goals.

Best for: Aggressive Evo X builds pushing extreme horsepower, where precise flow data, maximum reliability, and the flexibility of an external E85 fuel pump are paramount.

User feedback summary: Many tuners and enthusiasts rely on its documented flow rates and sturdy build, finding it highly consistent and dependable for demanding E85 applications, especially where high horsepower is the goal and precise data is crucial.

QFS 340LPH E85/Flex In-Tank EFI Performance Fuel Pump

For those who prefer an in-tank setup but still need substantial E85 flow, the QFS 340LPH E85/Flex in-tank pump is a fantastic choice. This pump embodies QFS’s engineering philosophy, designed to balance volume, pressure, and turbine impeller angle to prevent fuel overheating and ensure over 100,000 miles of problem-free operation. It’s flow-tested for accurate output, making it highly recommended for Evo X vehicles with engine performance upgrades. Its durable construction stands up to the demands of high-octane E85, and like other QFS products, features upgraded internals for quiet operation. The lifetime warranty, supported by their US-based team, adds significant value.

• Ultimate in peak engineering to guarantee reliability and longevity (100,000+ miles).
• Flow-tested high-performance fuel pump, recommended for vehicles with engine performance upgrades.
• Durable construction capable of handling the stress of high octane E85 fuel.
• Quiet Operation with upgraded polymers, brushes, and commutators.
• Lifetime warranty with dedicated in-house customer service in the USA.

Pros:
– Reliable 340 LPH in-tank flow for many modified Evo X builds.
– In-tank design maintains an OEM-like appearance and reduces external noise.
– Engineered for extreme longevity and consistent performance with E85.
– Quiet operation for a performance pump.
– Backed by an excellent lifetime warranty and US customer support.

Cons:
– In-tank installation can be more involved than plug-and-play.
– Might not provide enough flow for truly extreme horsepower levels (e.g., 800+hp).

Best for: Evo X owners seeking a dependable, high-flow E85-compatible in-tank pump for moderate to high power upgrades (up to ~600bhp) who prioritize reliability and a stealthy installation.

User feedback summary: Owners often highlight its straightforward installation as an in-tank replacement and its consistent performance when running E85, appreciating the added security of the lifetime warranty from a trusted brand.

OSIAS 380LPH Inline External E85 Compatible Fuel Pump 10AN

The OSIAS 380LPH inline external fuel pump is designed for serious performance builds, and its robust flow and integrated AN fittings immediately set it apart. With a 10AN inlet and an 8AN outlet, this pump is clearly made for custom fuel systems where maximum flow and secure, leak-free connections are paramount. The 380LPH flow rate is substantial, supporting high horsepower Evo X applications on E85. It includes a check valve for consistent pressure. If you’re planning on running custom braided lines and want a high-performance external pump ready to integrate seamlessly, this OSIAS unit is a strong contender.

• OSIAS 380LPH Inline External E85 Compatible Fuel Pump.
• Features 10AN Inlet w/Check Valve and 8AN Outlet.
• High flow rate capable of supporting high horsepower applications.
• E85 compatible for long-term use with ethanol.
• Often compared to the well-known 0580254044 pump.

Pros:
– Very high 380 LPH flow rate for extreme Evo X power goals.
– Integrated AN fittings (10AN inlet, 8AN outlet) simplify custom fuel line plumbing.
– External design offers flexibility for mounting location.
– Includes a check valve for maintaining system pressure.
– E85 compatible and robust construction.

Cons:
– Requires custom AN fuel lines, which adds to the overall system cost and complexity.
– No specific warranty duration mentioned in the provided features.

Best for: High-horsepower Evo X builds that are already committed to a custom fuel system with AN fittings, prioritizing maximum fuel flow and professional-grade plumbing.

User feedback summary: Enthusiasts and tuners often commend this pump for its robust flow and the convenience of integrated AN fittings, making it a popular choice for custom, high-horsepower E85 fuel systems that demand reliable fuel delivery.

Helpful Comparison Insights

When looking at the best E85 fuel pumps for Evo X performance, it’s clear there are two main categories: in-tank and external pumps. For many Evo X owners, an in-tank pump like the QFS-344FT-1026 340LPH or AEM 50-1215 340LPH offers a cleaner, more OEM-like installation, often with reduced noise. These 340LPH options are excellent for moderately modified Evo X builds, typically supporting up to around 600 horsepower on E85, providing a great balance of performance and ease of integration. The AEM pump stands out for its tested flow rates and broad fuel compatibility, including E100 and M100, which offers peace of mind for those pushing the limits. The QFS 340LPH in-tank pump offers a similar flow with a strong lifetime warranty.

For those pushing for higher horsepower figures, typically above 600 horsepower, 380LPH external pumps become the go-to choice. Options like the QFS Performance 380LPH Inline External pumps (there are two similar ones reviewed) and the OSIAS 380LPH Inline External offer the sheer volume needed. The QFS 380LPH pumps emphasize longevity, quiet operation, and detailed flow specs, all backed by a lifetime warranty, making them a very reliable choice for serious builders. The OSIAS 380LPH pump differentiates itself with integrated 10AN and 8AN fittings, which is a significant plus if you’re already planning a fully custom fuel line setup with AN lines. This makes the OSIAS ideal for those aiming for a professional, race-ready plumbing solution.

It’s also crucial to remember that a great E85 fuel pump for your Evo X is only one piece of the puzzle. The MAPerformance Stainless Steel Inline Fuel Filter is an absolute must-have for protecting your injectors from common E85 debris, regardless of your chosen pump. Similarly, the REV X E-Boost E85 & Alcohol Fuel Additive is highly recommended as a maintenance item to protect your entire E85 fuel system from corrosion and water absorption, ensuring the longevity of your high-performance setup. Don’t skimp on these complementary items; they’re vital for reliable E85 performance.

Final Verdict: Making the Right Fuel Choice for Your Evo X

Choosing the “best” E85 fuel pump for your Evo X really boils down to your specific power goals, budget, and desired installation complexity.

For the majority of modified Evo X owners running E85 — those aiming for reliable daily driving with strong street and occasional track performance, perhaps in the 400-600 horsepower range — an in-tank 340LPH pump is often the sweet spot. My top recommendation in this category would be the AEM 50-1215 E85-Compatible High Flow In-Tank Fuel Pump. Its proven reliability, rigorous individual testing, and broad fuel compatibility from a trusted brand make it an incredibly solid choice. The QFS 340LPH E85/Flex In-Tank EFI Performance Fuel Pump is also a fantastic alternative, offering similar performance with the added benefit of a lifetime warranty.

If you’re pushing the absolute limits of your Evo X, chasing serious triple-digit horsepower figures well over 600, or want the flexibility of an entirely custom fuel system, an external 380LPH pump is where you need to be. For raw flow, durability, and a great warranty, either of the QFS Performance 380LPH Inline External E85 Compatible Fuel Pumps would serve you incredibly well, especially if you appreciate detailed flow data. However, if you’re already going the route of full AN lines and want integrated, high-quality fittings, the OSIAS 380LPH Inline External E85 Compatible Fuel Pump 10AN is hard to beat for a clean, high-performance setup.

And don’t forget the supporting cast! Absolutely ensure you incorporate the MAPerformance Stainless Steel Inline Fuel Filter for injector protection and regularly use REV X E-Boost E85 & Alcohol Fuel Additive to safeguard your entire E85 fuel system. No matter which pump you pick, these two accessories will significantly contribute to the long-term health and performance of your E85-fueled Evo X. Invest wisely, tune properly, and enjoy those E85 gains!

Comprehensive FAQ Section

1. Why do I need an upgraded E85 fuel pump for my Evo X?
When running E85 in your Evo X, you’ll need approximately 30-40% more fuel volume compared to gasoline to achieve the same air-fuel ratio. The stock fuel pump simply can’t deliver this increased volume, leading to fuel starvation at higher RPMs or boost levels, which can cause severe engine damage. An upgraded E85 fuel pump ensures your engine gets the necessary fuel flow to safely produce more power.

2. What does LPH mean and how much do I need for my Evo X?
LPH stands for Liters Per Hour, indicating the volume of fuel a pump can deliver. For a mildly modified Evo X running E85, a 340LPH fuel pump is often sufficient for around 500-600 horsepower. For more aggressive builds pushing upwards of 600+ horsepower, you’ll likely need a 380LPH or even higher flow rate E85 fuel pump to maintain adequate fuel pressure and volume. It’s always best to consult with your tuner to determine the exact flow requirements for your specific build.

3. Is E85 safe for my Evo X’s fuel system?
E85 is more corrosive than gasoline and can cause issues with older or non-E85 compatible fuel system components. While modern Evo X fuel systems have some resistance, upgrading key components like the fuel pump, fuel lines (if external), and injectors to E85-compatible versions is crucial. Using fuel additives like REV X E-Boost can also help protect your fuel system from corrosion and water absorption, ensuring your E85 fuel pumps for Evo X performance last longer.

4. Should I go with an in-tank or external fuel pump for my Evo X on E85?
Both in-tank and external E85 fuel pumps for Evo X performance have their advantages. An in-tank pump offers a cleaner, more stealthy installation and tends to be quieter. It’s often the preferred choice for moderate power goals. An external pump provides more flexibility for extreme power builds requiring multiple pumps or very high flow rates, as it’s easier to access and cool. However, external pumps typically require custom mounting, fuel lines, and can be noisier.

5. Do I need other fuel system upgrades with an E85 fuel pump for my Evo X?
Yes, usually. Beyond an E85 fuel pump, you’ll typically need upgraded fuel injectors to match the increased fuel flow. A high-flow E85-compatible fuel filter (like the MAPerformance unit reviewed) is also essential to protect your injectors from debris. Depending on your power goals, a larger fuel rail, upgraded fuel lines, and a fuel pressure regulator might also be necessary to ensure your Evo X fuel system can fully support E85 performance.

6. How important is a good warranty for an E85 fuel pump?
A good warranty is very important, especially for E85 fuel pumps. Given the demands of high-performance applications and the corrosive nature of ethanol, component failure can happen. A lifetime or extended warranty, like those offered by QFS or KEMSO, provides peace of mind and protection for your investment. It also reflects the manufacturer’s confidence in the durability and quality of their E85 fuel pumps for Evo X performance.

7. Can I run pump gas with an E85-compatible fuel pump?
Yes, most high-performance E85-compatible fuel pumps are also designed to run perfectly fine with standard gasoline. In fact, many Evo X owners will run a mix or switch between pump gas and E85 depending on their needs. The key is that the pump (and other fuel system components) must be rated for E85 compatibility to prevent degradation, but being E85-compatible typically means it can handle gasoline too.