One Perf

Performance. Reliability. Custom work.

Engine tuning, E85 conversion, diagnostics and software options with clear checks, controlled work and explained results.

Appointments in Haut-Rhin, Basel and the German border area.
StageE85Diag

Quick estimate

Start your project

Select your vehicle, compare available stages and estimate E85 savings.

Our services

Services adapted to your engine

Stage tuning, E85, diagnostics, software options and electronic analysis.

Engine calibration: Stage 1 & Stage 2

Unlock your vehicle's potential with a calibration matched to your engine, setup and driving goals.

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Our custom remaps improve torque delivery, response and drivability while keeping a realistic reliability margin for the mechanical setup.

Bioethanol conversion (E85)

Switch to E85 with a custom engine adaptation designed for reliable everyday use.

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We check compatibility, then tune fueling, cold starts and correction behavior so the vehicle remains smooth and consistent.

DPF / EGR / AdBlue diagnostics

Technical diagnosis for warning lights, power loss and emissions-system issues.

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We read faults, inspect live values and review usage conditions before recommending a clear next step.

Options & personalization

Software options tailored to your vehicle: Pop & Bang, Vmax, launch control and specific adjustments.

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Each request is validated against the mechanical setup, exhaust configuration and intended use.

Electronic diagnostics & analysis

Fault-code reading and live-data analysis before any tuning or repair decision.

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The goal is simple: understand the vehicle first, then choose the right intervention.

Our method

A simple, technical and transparent method

Free custom study

01 Consultation

We clarify your vehicle, usage and target.

02 Full diagnostics

We check faults, engine values and technical feasibility.

03 Custom work

Tuning, E85, diagnostics or software options based on the validated plan.

04 Checks & follow-up

Final behavior checks and practical usage advice.

Simulators

Estimate engine potential and E85 savings before contacting us.

Request a free quote

Performance simulator

Quick calculation

E85 savings calculator

Estimate yearly savings compared with gasoline.

5 000 km50 000 km

Annual gasoline budget

2400 EUR

Annual E85 budget

1152 EUR

Estimated yearly savings

1248 EUR

Approx. 104 EUR / month

Current settings: SP 2.00 €/L, E85 0.80 €/L, Average consumption (L/100) 8.0 L/100KM, Estimated E85 overconsumption 20%.

FAQ

Answers to common questions

Are simulator gains guaranteed?

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They are catalogue estimates. Real results depend on vehicle condition, fuel and exact setup.

Is my car compatible with E85?

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We check engine, injection and ECU compatibility before confirming a conversion.

Can you diagnose DPF, EGR or AdBlue issues?

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Yes. We start with fault reading and live-data analysis.

What do you need for a quote?

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Vehicle, engine, mileage and goal: stage, E85, diagnostics, option or check.