Services & options
E85 conversion
E85 contains up to 85% ethanol: it needs roughly 30% more fuel volume, but rewards with a much higher octane rating: cooler combustion, more ignition advance, more power. Our E85 files recalibrate injection timing, fuel mass and ignition maps for a safe, clean-running conversion.
Cold start enrichment is adapted so the engine starts properly in winter. Combined with a Stage 1 or Stage 2, E85 offers one of the best power-per-euro ratios on turbocharged petrol engines.
What the file includes
- ✓Injection, ignition and cold start fully recalibrated
- ✓E85 + Stage 1 combo at a bundled token price
- ✓Check of injector and pump headroom, advised per engine
- ✓Popular in France and growing across Europe
What happens inside the ECU
E85 is not merely another fuel: it changes the arithmetic. At equivalent mixture it needs roughly 30 % more volume, so longer injection times, and the injectors and pump have to keep up at maximum flow. In return, its very high octane rating and its heat of vaporisation allow ignition advance that petrol would not survive, with lower combustion temperatures.
So we recalibrate the whole set: fuel mass, injection timing, advance, and above all cold-start enrichment — that is where failed conversions are decided, with an engine that refuses to start in January. On a turbocharged engine already at Stage 1 or Stage 2, the combination remains one of the best power-per-euro ratios available; but the real flow capacity of the fuel system has to be known before any figure is promised.
What this file does not do
A file does not change the hardware. If the injectors or the pump are already at the end of their flow on petrol, they will be more so with a fuel that asks for a third more: that is then a mechanical conversion, not a calibration.
The rest has to be accepted: consumption rises in the same proportion, cold starts depend on the real quality of the blend being sold, and on older vehicles the hoses and seals of the fuel system were not all designed for ethanol. Finally, E85 availability varies from one country to the next: a car converted without a flexfuel mode becomes dependent on a network of stations.
What you send us
- →The complete original read of the engine ECU.
- →The fuel system hardware: factory injectors and pump, or modified parts with their part numbers.
- →The intended use: flexfuel (E85 and petrol interchangeably) or E85 only.
- →Make, model, engine, year, and the stage already applied if there is one.
Turnaround and tokens
60 minutes maximum during opening hours for a file already developed on that reference.
Mon–Fri 8:00–18:00 · Sat 9:00–16:00 · Sun closed (Brussels time)
Median measured over the last six months: 20 minutes.
A file never developed for that reference means custom work: we tell you the turnaround before your tokens are committed, never after.
Check access to your ECU
Before ordering, the real question is which route your tool uses to read that ECU. These pages gather what the tool vendors announced, reference by reference, with the dates.
Frequently asked questions
Does the customer need hardware changes?
On most modern direct-injection engines, no hardware change is needed for full E85 as long as injectors and pump have enough headroom. We confirm per engine before delivering the file.
Can the car still run on petrol afterwards?
A dedicated E85 file expects ethanol. Where the platform allows it, we can build a flex-fuel calibration that tolerates mixed fuel. Mention it when uploading.
How much power does E85 add?
On turbocharged engines combined with a stage file, the higher octane typically allows noticeably more ignition advance and boost than 98 RON. Exact figures depend on the engine and are quoted per project.
Ready to send your file?
Create your professional account, buy tokens and upload your original read. Your custom file comes back in 60 minutes maximum during opening hours, with a live estimate.
Live estimate · 60 min max during opening hours