Chiptuning Gains API — Stage 1-4 Performance Database for 11,500+ Vehicles

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REST API access to our vehicle performance database. 11,500+ vehicles, 2,300+ ECU types, Stage 1-4 HP & Torque gains. Custom website integration available. €249 setup + €29/month or €249/year.

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Instant Download

Your tuning file is available immediately after purchase — no waiting.

Checksum Safe

Every file is verified and checksum-corrected for safe, reliable flashing.

Tool Compatible

Works with KESS, KTAG, AutoTuner, CMD, PCMFlash, and all major interfaces.

Engineer Support

Our tuning engineers are available via WhatsApp for any technical questions.

REST API • JSON • Self-Hosted

Vehicle Performance Gains API
for Chiptuning Websites

Embed a live performance calculator on your website. Your visitors select a vehicle and see exact HP, Nm, and fuel economy gains for Stages 1–4. Data comes from your own server — no external dependencies, no monthly API fees.

RESTful JSON
API Key Auth
All Brands Included
Stages 1–4
Fuel Economy
CORS Ready

11,500+

Vehicles

2,353

ECU Types

4

Tuning Stages

26

Data Fields/Engine

5

API Endpoints

MakeBMW, Audi… Model3 Series, A4… GenerationF30 2012-2019 Engine320d 163HP ECUBosch EDC17 /makes/models/{id}/generations/{id}/engines/{id}/ecus/{id}

26 Data Fields Per Engine

Every API call returns rich, structured JSON. Not just HP numbers — full engineering data.

JSON Response — Engine Detail200 OK
{
  "id": 1847,
  "name": "320d (N47D20) 163 HP",
  "engine_code": "N47D20",
  "displacement": "1995 cc",
  "fuel_type": "Diesel",
  "vehicle": {
    "make": "BMW", "model": "3 Series",
    "generation": "F30",
    "year_from": 2012, "year_to": 2019
  },
  "original": { "hp": 163, "nm": 380 },
  "stage1": { "hp": 205, "nm": 430, "gain_hp": 42, "gain_nm": 50 },
  "stage2": { "hp": 225, "nm": 460, "gain_hp": 62, "gain_nm": 80 },
  "stage3": { "hp": null, "nm": null, ... },
  "stage4": { "hp": null, "nm": null, ... },
  "fuel_saving": {
    "combined_percent": "Up to 15%",
    "full_eco_percent": "Up to 20%"
  }
}

Vehicle Identity (7 fields)

Name, engine code, displacement, fuel type, make, model, generation + year range

Performance Gains (16 fields)

Stock HP/Nm + Stage 1-4 HP/Nm with exact gain differentials per stage. 4 values x 4 stages.

Economy Data (2 fields)

Combined cycle fuel saving % and full eco-mode fuel saving %. Sell performance AND economy.

How We Compare to Other Tuning APIs

More data, more stages, lower cost. Here is the honest breakdown.

Feature Gains API Dyno-CF TuningFiles Mod-Files ChiptunePRO
Tuning Stages 1, 2, 3, 4 1, 2 1, 2 1 only 1, 2
HP + Nm + Differentials ✓ All 4 per stage ✓ HP + Nm ✓ HP + Nm ✓ HP + Nm ✓ HP + Nm
Fuel Economy Data ✓ Combined + Eco ✗ ✗ ✗ E85 only
Engine Technical Specs ✓ Code, CC, Fuel ✓ ✓ Basic Basic
ECU Database ✓ 2,353 types ✓ ECU+TCU ✓ ✗ ✗
All Brands Included ✓ Always 3 brands (Basic) ✓ ✓ ✓
Self-Hosted (your data) ✓ Your server ✗ Their server ✗ Their server ✗ Their server ✗ SaaS
Annual Cost (all brands) From €100/yr €2,450 + €450/yr €1,000/yr €749/yr €420/yr

* Starting from €100/year for Standard. All brands, all stages, all data fields included in every plan.

Why This API Is Different

Self-Hosted = Zero Dependency

Every other API on this list is hosted on their server. If they go down, your website’s gain calculator goes down. With the Gains API, it runs on YOUR server — 100% uptime depends only on you.

Fraction of Competitor Cost

Competitors charge €450–€2,450/year. The Gains API starts at €100/year with all brands and all 4 stages included. That is 4x–24x cheaper than the competition for more data.

4 Stages, Not 1 or 2

Most APIs only return Stage 1 data. Some have Stage 2. The Gains API returns Stages 1 through 4, each with separate HP, Nm, and gain differential fields. Show your clients the full performance picture.

Fuel Economy Included

No competitor returns fuel economy data. The API includes combined-cycle and full eco-mode fuel saving percentages. Sell both performance AND economy to your diesel clients.

Pre-Calculated Gain Differentials

Other APIs return raw HP/Nm values — you calculate the +42 HP yourself. The API pre-calculates gain_hp and gain_nm for each stage. Less frontend work, fewer bugs.

Your Data, Your Rules

Add custom engines, edit gain values, disable specific brands — all from your admin panel. With external APIs, you get what they give you. Here, you control everything.

API Endpoints

Method Endpoint Returns
GET /api/v1/gains/makes All vehicle makes (id, name, slug)
GET /api/v1/gains/makes/{id}/models Models (id, name, slug)
GET /api/v1/gains/models/{id}/generations Generations (year range, platform code)
GET /api/v1/gains/generations/{id}/engines All engines with Stage 1-4 HP/Nm gains
GET /api/v1/gains/engines/{id} Full engine detail + vehicle hierarchy + fuel economy

Integration Example

JavaScript — Cascading Vehicle Selector
// Your portal URL
const API = 'https://your-portal.com/api/v1/gains';

// 1. Load vehicle makes into first dropdown
const makes = await fetch(`${API}/makes`)
  .then(r => r.json());

// 2. When user selects BMW (id: 3), load models
const models = await fetch(`${API}/makes/3/models`)
  .then(r => r.json());

// 3. Select generation, then load engines
const engines = await fetch(`${API}/generations/42/engines`)
  .then(r => r.json());

// 4. Display gains
engines.data.forEach(e => {
  console.log(
    `${e.name}: ${e.original_hp} HP`,
    `Stage 1: ${e.stage1_hp} HP (+${e.stage1_diff_hp})`,
    `Fuel saving: ${e.fuel_saving_combi_eco}`
  );
});

Authentication

Public Mode (No Auth)

Toggle “Require API Key” OFF in your admin panel and the API is open. Ideal for public gain calculator widgets where you want zero friction.

API Key Mode

Generate a key from Settings → API. Pass via X-API-Key header. Keys are encrypted at rest. Rate limited per IP to prevent abuse.

Choose Your Plan

Both plans include all brands, all 4 stages, all 26 data fields, and fuel economy data. No feature gating.

Standard

€100

per year

✓ 11,500+ vehicles, all brands

✓ Stage 1–4 HP + Nm + differentials

✓ 2,353 ECU types

✓ Fuel economy data

✓ 5 REST endpoints, JSON responses

✓ API Key authentication

✓ CORS ready

✓ Database updates included

Most Popular

Professional

€249

per year

✓ Everything in Standard

✓ Custom WordPress plugin built for you

✓ Shortcode integration [gains_calculator]

✓ Styled to match your website theme

✓ Plugin installation & configuration

✓ Priority email support

✓ Plugin updates for 1 year

✓ Custom modifications on request

Need something different? We build custom integrations for any platform.

Integrates With Everything

Standard REST + JSON works with any language, any platform, any HTTP client.

WP

WordPress

JS

JavaScript

PHP

PHP

PY

Python

Re

React

Vu

Vue.js

WC

WooCommerce

++

Custom

Custom Integration Service

Need something specific? We build it for you.

If your website runs on a platform not listed above, or you need a custom design for the gain calculator, we offer bespoke integration as a one-time service. Tell us what you need and we quote it.

WordPress Plugin

Custom shortcode, styled to your theme, installed and configured. Included in Professional plan.

React / Vue Widget

Drop-in component for SPA applications. Responsive, themeable, ready to embed.

Standalone HTML Widget

Single JS file that works on any HTML page. No framework required. Copy-paste one script tag.

Fully Custom Solution

Shopify, Wix, Squarespace, mobile apps, or anything else. We adapt the API to your platform.

Ready to Integrate?

Test every endpoint on the live demo. See the data structure, response times, and JSON format before you buy.

Chiptuning Gains API • Self-Hosted • REST + JSON • All Brands Included

Frequently Asked Questions

Use your preferred tuning tool (KESS, KTAG, AutoTuner, CMD, etc.) to write the file to the ECU via OBD, bench, or boot mode.

Yes. Every file we sell has verified checksums — ready to flash without additional correction tools.

Contact us via WhatsApp or the support dashboard. Revisions for the same stage are free.