An ethanol-focused performance build involves several decisions that need to work together. Your fuel pump, ethanol sensor, hoses, and tuning each have a different role. When those choices are coordinated from the beginning, the finished installation can be easier to plan, understand, and develop further.

Dorch Engineering offers more than an upgraded pump for that process. At Extreme Power House, the current collection includes B58 flex-fuel kits, a Gen1 B58 HPFP and ECA package, an S58 flex-fuel kit, and application-specific fuel hoses alongside its high-pressure fuel pump range. 

For owners planning ethanol monitoring or a compatible flex-fuel setup, these products provide a way to approach the hardware as a connected system.

Give Every Component a Clear Job

Start by separating two questions: how much fuel can the system deliver, and how does the vehicle know the ethanol content of that fuel?

A high-pressure fuel pump upgrade addresses delivery capacity. An ethanol content analyzer, often shortened to ECA, provides information about the fuel mixture. Neither choice replaces the need for tuning that supports the intended configuration.

This distinction gives your build a clearer direction. You may already have suitable pump hardware and want to add ethanol monitoring. You may be planning both changes together. Or you may have a sensor installed and need different plumbing as the rest of the system evolves.

Decide which situation matches your car before choosing the package. That makes the product options more useful and helps avoid buying components twice.

Gen1 B58: Combine the Pump and Sensor Installation

For earlier B58 BMW projects, XPH offers the Dorch Engineering B58 Gen1 HPFP+ECA Package.

The listing describes a combination of a Dorch high-pressure fuel pump and a CAN-based flex-fuel ECA system. It also specifies ECA-oriented hoses in place of the standard kit hose, bringing the plumbing into the package rather than treating it as a separate afterthought.

Listed applications include the F20/F21 M140i, F22/F23 M240i, F30/F31/F34 340i, and F32/F33/F36 440i families. The page explicitly excludes 2020-and-newer B58 vehicles, with additional year restrictions shown for certain larger BMW applications. 

For an owner making both changes, the attraction is straightforward: plan the pump and ethanol-sensor installation at the same time.

Discuss the available pump configuration with XPH and your tuner before ordering. Your intended fuel, existing hardware, and power goal should guide that choice, giving the package a defined place in the build.

Gen2 B58: Options for BMW and Toyota Supra Owners

The Dorch Engineering B58 Gen2 Flex Fuel ECA Kit serves a different group of vehicles.

XPH lists applications including B58-powered Toyota Supra A90/A91 models, the BMW G29 Z4 M40i, G42 M240i, G20/G21 M340i, and G22/G23/G26 M440i. Additional applications are listed with engine-generation restrictions.

The kit contents include a Zeitronix ECA-CAN module, Continental ethanol sensor, custom PTFE hose set, wiring harness, and mounting accessories. The product page also requires selections for chassis fitment and HPFP type.

Those selections matter because the finished installation needs to match both the vehicle and its pump arrangement. A Supra owner and an M340i owner may be working toward similar goals, but they should still order around their specific applications.

For your build, identify the existing HPFP before choosing the kit. Then review software compatibility with your tuner so the ethanol-content signal has the intended role in the calibration.

S58 M3 and M4: Add Ethanol Information to the Plan

For the BMW G80 M3 and G82 M4, XPH lists the Dorch Engineering S58 Flex Fuel ECA Kit, part number DE-58-ECA-M34.

The kit is designed to send ethanol-content information through CAN communication for use with compatible flex-fuel tuning. Its listed components include a Zeitronix module, Continental sensor, PTFE hoses, and a Dorch wiring harness.

XPH describes an installation that connects with the original harness without cutting or wire taps and allows the factory engine covers and sound insulation to remain in place. The listed fitments for this specific kit are the G80 M3 and G82 M4.

For an owner who values a tidy engine bay, that integration is part of the appeal. The goal can be a more capable setup that still looks carefully assembled.

Plan the hardware and software together. Installing an ethanol sensor alone does not make a factory calibration ready for unrestricted ethanol use.

Fuel Hoses Deserve Attention Too

The smaller components can determine how neatly a fueling project comes together.

XPH lists the Dorch Engineering B58 Gen2 Low Pressure Hose for Flex Fuel ECA Fitment, with configurations for supported chassis and pump combinations.

The product uses PTFE-lined hose with stainless steel reinforcement, an outer PVC jacket, crimped connections, and aluminum fittings. It is designed around 3/8-inch ethanol sensors and offers configurations for original and Dorch HPFP arrangements.

The listing emphasizes routing that retains compatibility with factory sound insulation and engine covers. 

This is useful when developing a car that already has some of the required equipment. Review what is installed, what is changing, and which connections the new arrangement requires.

Keep the shopping list specific. A hose set, an ethanol sensor, and a complete electronics package serve different purposes, even when they appear within the same product family.

Build Around Your Actual Setup

Before ordering, put together a short description of your vehicle: exact model, engine generation, current fuel pump, existing ethanol hardware, tuning platform, and intended fuel.

Share those details with XPH and your tuner. It is a practical way to narrow the available options and identify which pieces belong in the next installation.

Treat the result as one coordinated upgrade. Hardware fitment, sensor communication, fuel-delivery capacity, and calibration all deserve attention before the car returns to service.

Shop Dorch Engineering at Extreme Power House

A rewarding ethanol build starts with parts selected for the same plan. Dorch Engineering's range at XPH gives enthusiasts options for combining fuel delivery, ethanol-content monitoring, and application-specific plumbing across supported BMW and Toyota Supra platforms.

Explore the Dorch Engineering collection at Extreme Power House to compare the current kits, pump packages, hoses, and supporting components.

Bring your vehicle details and build goals to XPH, and choose the hardware that helps your next stage come together.