Shipping, Warranty and Terms of Use

Price for shipping

Free international shipping (DHL).

EU 2-7 working days, Rest of world 3-10 working days.

If you have any questions about delivery times or methods, please contact us.

eFlexFuel terms of use

These terms of use are applicable to all eFlexFuel E85 conversion kits, their wiring harnesses, and their accessories manufactured by StepOne Tech Ltd (the manufacturer). Please read these terms of use carefully before using or attempting to install the eFlexFuel or the related components. This ensures that both parties (the buyer and the seller) are aware of how to proceed in different operational situations of the eFlexFuel.

Guarantee and refund

The manufacturer offers a one-year (12 months) manufacturer's guarantee for the control unit and to other components. The guarantee applies only to the conversion kit, the included wiring harness, ethanol sensor, and their functionality. Always read the instructions of instruction manual in its entirety before attempting to install or use the eFlexFuel. This ensures that the product operates as it has been designed.

The guarantee does not cover damages caused by improper installation by the buyer or by the buyer's agent, or if the product has been damaged by wear that is not caused by normal use or by a manufacturing defect.

The guarantee covers faulty installation by the manufacturer or by an authorized dealer. Any modification done to the conversion kit without the consent of the manufacturer voids the guarantee.

If the product has a fault that can be regarded as a result of a faster than normal wear or a result of a manufacturing defect, the manufacturer will provide the buyer with a new product or repair the faulty product within the time that is seen appropriate by the local consumer protection act. The manufacturer has the right to redeem the faulty product if it is replaced by a new one.

The manufacturer reserves the rights to any modifications, expansions, attachments, or improvements made by customer.

The manufacturer has to accept returns of unused products within 32 days as stipulated by the Chapter 6 of the Finnish consumer protection act.

Product liability

The use of eFlexFuel conversion kit happens at the user's own responsibility. Please note the warranty granted by a car manufacturer may be void once a conversion kit has been connected to the car's systems.

The manufacturer commits only to make up for damage caused to the conversion kit, the accompanied wiring harness, or accessories as covered by the guarantee.

The manufacturer does not make up for damage caused to the car by the use of ethanol containing fuel. Neither does the manufacturer compensate for damage caused by the installation to the product, the installation's target vehicle or the person carrying out the installation, if the installation is carried out by the customer or by customer's agent. Damages caused by using malfunctioning eFlexFuel is at user's responsibility.

Ethanol sensor should be connected by using accessories (incl. quick connectors and fuel hose) approved by the manufacturer.

Manufacturer is not responsible for consequences resulted from violating local regulations. User must be aware of local regulations regarding upgrading a vehicle for bioethanol based fuel. Please take notice that using eFlexFuel could be against the law in some parts of the world.

The compatibility information provided by the manufacturer or distributor is always indicative. eFlexFuel is installed to used vehicles in which components or component properties may have been changed from the original. For this reason, there may be situations where the product is suitable for 99 % of identical cars, but not suitable for 1 %. For example, over-worn parts of the ignition and fuel supply may interfere with the operation of the device so that it does not function in the intended manner.

Please note that the eFlexFuel device's Bluetooth application may not work on all mobile devices. There are hundreds of different operating system versions in mobile devices. For this reason, it is impossible to guarantee the functionality of the applications in every different operating system and device combination. Insufficient Bluetooth connectivity is not a valid reason for a product reclamation.

In all faults associated with eFlexFuel, the customer must contact first the retailer. The manufacturer does not compensate any third party actions such as repairs and is not directly or indirectly liable for any third party installations. The manufacturer is also not liable for installation errors in any way.

The device must not be installed or used without approved the Terms of Use.


All our prices includes Finnish VAT. 24%.

Orders outside of EU without VAT. Webstore automatically reduce the VAT to orders total sum if you order outside of EU.

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Check the compatibility for your vehicle

eFlexFuel is not available in direct injection engines (CGI, FSI, GDI, EcoBoost, etc.) or diesel engines.

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No matches in our database. Please contact us via form and we check if your vehicle is compatible.


Carmake Model Start Year End Year Displacement Power (kW) Cylinder count Engine code

Not compatible to following engines:

Carmake Model Start Year End Year Displacement Power (kW) Cylinder count Engine code

If the vehicle is not in the list above, you can leave us a compatibility request. We add vehicles to our database when we are asked for compatibility.

Compatibility request is free.

VIN code is 17 characters

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  • Manufacturer
  • StepOne Tech Ltd
  • Myllyhaantie 7
  • 33960 Pirkkala
  • Finland
  • FI24890300

eFlexFuel™ is developed and made in Finland

eFlexFuel™ is trademark owned by StepOne Tech Ltd