I am new to tuning — is it safe?

VAGPULSE shows power, torque and fuel headroom before you change anything, and it is honest about what each ECU can and cannot do. Use a stable 12V supply, keep a backup, and the app walks you through it.

Available now. Download the VAGPULSE software today; your cable is in stock and ships in 3 business days. Get it →

VAGPULSE 🛒 0

Available now · download today

The whole VAG garage,
in one app.

VAGPULSE is car tuning software built only for VW & Audi. ECU tuning, coding and diagnostics in one app: scan every module, unlock hidden coding, build a Stage 1–3 map and, on Bosch ME7 cars, flash it over the included VAGPULSE cable. One cable does the diagnostics, the coding and the flashing. Log your car before and after, tune it to its real data, and learn every step from the built‑in 58‑page Tuning Bible.

Get VAGPULSE — $249 ⚡ Build a tune ↓

Software downloads instantly · your VAGPULSE cable is in stock and ships in 3 business days

0OEM stock files

0immo EEPROM files

0+ modules read

0tuning stages

VAGPULSE — Code · Diagnose · Tune · Build Windows 10 & 11

VAGPULSE parts catalog — viewing a part with photo & price

↑ Real screens from the actual VAGPULSE app, auto‑playing through the menus.

AUDIVOLKSWAGEN ME7 · MED9 · MED17 · EDC15/16/17 · DSG (flashing: ME7)Included VAGPULSE cable · K‑line + CAN

📱 Included · VAGPULSE Mobile

The car is outside. Your laptop isn’t.

Read fault codes with real descriptions, watch live measuring blocks six at a time, and datalog a pull, all from your phone, over Bluetooth to the VAGPULSE cable. Tap Send to computer and the log lands in the desktop software ready for analysis. Included with your licence, no subscription.

See the mobile app → 📈 Log & Advise

The VAGPULSE app on a phone: the Car tab with the connected engine module,
a scan button and the Car / Live / Tools / Shop bar along the bottom

🗂 New · VAGPULSE File Store

Don't want to tune it yourself?

Buy just the file. Original factory calibrations recovered for $20, ready-made Stage 1 – 3 from $99, or send us your own ECU read for a custom remap at $199, tuned to your car and your datalog. Plain .bin files. No encryption, no lock-in. Search 547 engine variants across 65 Audi & VW models, 1995–2024.

No hardware needed. These are files, not a device — flash one with any tool that writes your ECU. Each is matched to your own ECU by hand, so turnaround is usually 24–48 hours. Nothing to ship and no cable to wait for.

Browse the file store → 🔎 Find my car

$20Original file

$99Stage 1 tune

$149Stage 2 tune

$179Stage 3 tune

$199Custom remap, built around your own file

Build your tune

Pick an engine, a stage and a fuel, and watch the power climb. This is the real Build & Tune planner.

Engine

Stage

Fuel

0HP

0Nm torque

+0hp vs stock

Watch it read the car

Real protocols, every module. Not just the engine.

LIVE

VAGPULSE auto-scan — Audi A4/S4/RS4, faults in plain English

VAGPULSE auto-scan — VW Golf R32, all modules

VAGPULSE auto-scan — Audi A3/S3, no faults

VAGPULSE auto-scan — full vehicle, multiple faults

👆 See a fault code? Click it and VAGPULSE looks it up online for your exact car & engine, so you know what it means and how to fix it. No more typing codes into a search bar.

What it actually does

Real screens from the app, not mock-ups. Scroll through the core tools.

VAGPULSE full auto-scan with fault codes

01 · Diagnose

Read every module, not just the engine

A full‑vehicle Auto‑Scan in seconds: engine, gearbox, ABS, airbags, gateway, with part numbers, coding and fault codes in plain English.

Plain‑English fault descriptions
Click a fault code to look it up for your exact car
Clear codes with one click
Freeze‑frame & readiness monitors
Component output tests

VAGPULSE ECU tuning map editor with heat-map

02 · Tune

Edit the real maps, see the heat

VAGPULSE auto‑detects the tables in almost any ECU and shows them as colour‑coded heat‑maps you can drag, type into, or reshape. When it builds a tune, it corrects the checksum too.

Automatic table detection (100+ maps)
Heat‑map & region editing
Fuel‑grade Stage 1–3 preview
Checksum corrected when it builds a tune

Build & Tune — S4 (B5) 2.7T biturbo

1 Which stage?

Stage 1Stock hardware. Safe everyday gain. Stage 2Exhaust / intake fitted. Stage 3Turbo + fuelling upgraded.

2 Fuel grade

919398E85

3 Hardware you have fitted

Stock K03 turbos K04 hybrid Big single Stock injectors 550 cc 1000 cc

4 What this will change

332 hp 449 Nm · +76 hp over stock

Injectors max out — fit larger injectors

03 · Build

Plan a Stage 1–3 build before you touch a map

Pick your turbo, injectors and fuel and the planner shows real power, torque and fuel headroom, and tells you the weak link before you spend a cent.

Live power & torque estimate
Injector duty / fuel‑headroom check
Hardware checklist per stage

VAGPULSE guided module swap, Gen1 and Gen2

04 · Module swap

Fit a used ECU or module, step by step

A guided, split‑screen walkthrough for both the offline (Gen 1) and gateway (Gen 2) methods, with component protection handled so the car still starts.

Gen 1 (offline) & Gen 2 (gateway)
Component‑protection guidance
Read/transfer gateway data

VAGPULSE VIN and immobilizer / EEPROM tools

05 · Immobilizer

Fix the no‑start when you swap an ECU

Edit the VIN, read and write the EEPROM, and copy the component‑security from your car's original ECU so a used or stock ECU starts the car.

VIN editing in flash & EEPROM
EEPROM read / write over OBD
Component‑security matching

VAGPULSE Add a Spare Key page — detect the immobiliser, read the SKC from the cluster or ECU, match the key

06 · Key adaptation

Add a spare key without the dealer

Lost a key, or just want a spare you can trust? VAGPULSE walks you through the whole immobiliser key‑match in plain English: the same documented Login + Adaptation procedure the pros use.

Auto‑detects Immo 1–5 / MQB and what's possible over OBD
Reads your SKC from the car (cluster [17] or engine ECU [01])
Or recover it from a saved EEPROM file
Matches 1–8 keys over your existing connection
Beginner‑friendly, guided in plain English

VAGPULSE parts catalog — viewing a part with photo and price

07 · Parts

Find the right parts for your car

A built‑in catalogue of OEM and performance parts matched to your model and engine. No more guessing part numbers.

Genuine & performance parts
Matched to your model / engine
Part numbers at a glance

Transmission tuning, too

It’s not just the engine. VAGPULSE reads your DSG / S‑tronic gearbox and identifies it automatically (DQ250, DQ500, DL501 and more), then plans a safe Stage tune, showing the exact torque‑limiter target your engine needs so the gearbox stops cutting your power. VAGPULSE does not write gearbox software, so the gearbox tune itself is flashed with a tool that supports your TCU.

VAGPULSE transmission tuning — DQ500 DSG gearbox auto-detected, with shift-point map and per-gear torque limiter

⚙ Knows your gearbox

Auto‑identifies DQ250, DQ500, DL501, DQ200, DQ381 and DL382 from the TCU, clutch type and stock torque included.

↑ Torque‑limiter planning

Shows the safe limiter target to match your engine tune, plus clutch headroom and warnings, to a safe ceiling for that exact box.

⚡ Reads the gearbox

Reads the gearbox's fault codes and live data over the same VAGPULSE cable. It does not write TCU software, so a gearbox tune is flashed with a tool that supports your TCU.

Gearboxes: DQ250 · DQ500 · DL501 · DQ200 · DQ381 · DL382

Real gains, planned before you flash

Stock vs Stage 2 on the 2.0 TFSI, estimated crank.

0hp peak

0Nm peak

+36%over stock

Log it. Tune it. Log it again.

Tuning blind is guessing. VAGPULSE logs what your car actually does, before and after, then reads the log and tells you, in plain English, exactly what to change and what to leave alone.

ADVISOR Stage 2 · full pull · 3rd gear

🔧 At the fuel limit 2,140 samples · 3 pulls · coolant 88°C

This engine is now at its fuel limit. The injectors are near maxed. For more power you must upgrade fuelling, not add boost. Adding air now would go lean.

⛔Running lean under load 0.89 λ @ 6,200 rpm

Leaner than the ~0.85 λ a turbo VAG should run at full load. Lean plus boost is how pistons get holed.

Do this Add fuel up high in LAMFA. You are at the injectors’ limit, so this is a patch, not a fix.

⚠Injectors 93% duty peak 93% @ redline

Near maxed. Above about 95% the injector cannot open any further and the mixture goes lean on its own.

Do this Bigger injectors, then rescale KRKTE to match them. That unlocks the next stage safely.

✅Knock clean min 0.0° · all cylinders

No ignition retard anywhere in the pull, so the engine never heard detonation.

Do this Nothing. Timing has headroom in KFZW once fuelling can support it.

+22whp vs baseline

+0.9bar peak boost

0knock events

08 · Log & Advise

A tune shaped by your car, not off the shelf

The same map behaves differently on a clogged MAF, tired injectors or a heat‑soaked intercooler. VAGPULSE logs everything the ECU exposes on a proper full‑throttle pull, then grounds every finding in real reference ranges, so you fix the right map, or the right part.

Guided full pull: it walks you through a safe 3rd/4th‑gear pull to redline
Reads knock, lambda, boost request‑vs‑actual, injector duty, load & IAT
Isolates a single weak cylinder: its injector, coil or plug
Points at the exact Bosch map to change: LAMFA · KFZW · LDRXN · KRKTE
Before‑vs‑after verdict: room‑for‑more · fuel‑limited · knock‑limited · unsafe

The Tuning Bible, built right in

Never tune alone. Every VAGPULSE ships with a 58‑page Tuning Bible, from absolute zero to Stage 3, that opens inside the app. No PDF reader, no browser tabs: tap 📕 and read.

09 · Tuning Bible

From “what’s a map?” to Stage 3, in plain English

Real diagrams, not stock clip‑art: a 4‑stroke cross‑section, the air/fuel balance, boost control and heat maps of the exact tables you'll be editing. Zoom into any page, pan around, and jump straight to the chapter you need, right from the main screen, next to the flash tools.

Built‑in reader, top‑right of the main screen, beside Flash
Zoom & pan every page, rendered high‑resolution and crisp
Jump‑to‑section: intake · fueling · boost · timing · knock
Explains every Bosch map by name: KFMIRL, LDRXN, KFZW, LAMFA…
Included free with every license, beginner to expert

VAGPULSE Tuning Bible — engine reference pages

VAGPULSE Tuning Bible — four-stroke engine cross-section diagram

Why VAGPULSE — ECU tuning, coding & diagnostic software in one app

Most VAG tools make you choose. VAGPULSE doesn’t.

Diagnostic tools read your car. Tuning tools write to it. Most do one or the other.

VCDS, OBDeleven and Carista will scan every module, throw up your fault codes and unlock hidden coding — but not one of them can write a map to your ECU. TunerPro, NefMoto and WinOLS will write maps — but they can’t scan your ABS module, reset a service light or adapt a spare key.

VAGPULSE does both: full diagnostics, coding and adaptations and Stage 1–3 tuning with ECU flashing over OBD on Bosch ME7 cars. One program, one cable, one payment — no per-car credits, no per-VIN unlocks, no annual fee.

	VAGPULSE	VCDS / dealer	Tuning toolsTunerPro, NefMoto, WinOLS	Basic OBD appOBDeleven, Carly
Full‑system diagnostics	✓	✓	✗	Engine only
Coding & adaptations	✓	✓	✗	✓
Stage 1–3 tuning & map editor	✓	✗	✓	✗
ECU flashing over OBD	Bosch ME7 only	Limited	✓	✗
Map definitions included	✓	✗	Find your own XDF	✗
Checksum correction built in	✓	✗	Separate utility	✗
1,900+ OEM stock files	✓	✗	Forum hunt	✗
VIN / immobilizer & EEPROM	✓	Dealer only	✗	✗
Add a spare key (key adaptation)	✓	Dealer only	✗	✗
Works offline · one‑time price	✓	✓	Free	Often subscription

And it’s one program, not a chain of them. The free route to flashing an ME7 is genuinely good and genuinely free — but it’s four separate tools: read with one, hunt down an XDF definition that matches your exact part number, edit in another, correct the checksum in a third, then write back. VAGPULSE ships the definitions, the editor and the checksum maths in the same window.

It also refuses to write when a check fails. VAGPULSE writes Bosch ME7 ECUs only. Before it writes, it refuses a file whose part number shows it is for a different ECU, corrects the checksum on the tunes it builds or refuses a file it cannot correct, and checks the supply voltage. If a check fails, it stops and tells you why, in plain English. How that gate works →

One cable, does it all.

The VAGPULSE cable is included with every license, and it does the whole job on one cable: diagnostics, coding and live data on both K‑line and CAN cars, plus Stage 1–3 tuning and ECU flashing over OBD on Bosch ME7 petrol ECUs. No hunting for the right adapter, no clone lottery, no “which one actually works” guessing. One cable, everything.

Available now. Order today and your cable ships in 3 business days. Your software is ready to download the moment you order, so you can learn every screen in demo mode while your cable is on its way.

One price. Everything included.

A one‑time purchase, locked to your machine. No subscription, ever.

VAGPULSE License

$249one‑time · USD

⚡ Software today · cable in stock, ships in 3 business days

VAGPULSE cable included, diagnostics through flashing · in stock, ships in 3 business days
Full‑system diagnostics, coding & adaptations
Stage 1–3 Build & Tune planner + map editor
ECU flashing over OBD on Bosch ME7 ECUs, checksum-aware
1,900+ OEM stock files included
1,100+ immobiliser EEPROM files (12 chip types)
VIN / immobilizer + EEPROM tools
Key adaptation: add a spare key over OBD
Built‑in demo mode — every screen, no cable needed
Machine‑locked license · free v2.x updates

Get VAGPULSE — $249

🔒 Secure checkout via Stripe License key on screen instantly ✓ Cable guarantee: refund if it won't connect support@vagpulse.com

Download instantly. Your machine‑locked key and installer link appear on screen the moment your payment clears, so you can start in demo mode today. Your VAGPULSE cable is in stock and ships in 3 business days.
Priced in US dollars. If you are outside the US, Stripe may show the equivalent in your own currency on the payment page — it is the same $249.

Not on Windows? VAGPULSE the program is Windows 10/11 only — we would rather say so here than after you have paid. The VAGPULSE phone app is free to download and runs a full demo on any Android; to read your own car over Bluetooth it uses the VAGPULSE cable, which comes with the licence. And every file in the file store is a plain .bin you can flash with whatever tool you already own, on any machine.

Questions

What cable do I need?

None to buy separately. The VAGPULSE cable is included with your license. It is in stock and ships in 3 business days; once you order, your software downloads instantly, so you can explore every screen in demo mode while your cable is on its way. It handles diagnostics, coding and live data on both K‑line and CAN cars, plus Stage 1–3 tuning and ECU flashing over OBD on Bosch ME7 petrol ECUs. There is nothing else to source.

Which cars are supported?

Audi and Volkswagen across K‑line and CAN, from early ME7 / EDC15 up to modern MED17 / EDC17 and DSG, for diagnostics, coding and ECU reading. Writing a tune (flashing) is supported on Bosch ME7 petrol ECUs only, the kind in many 1.8T, 2.7T and 4.2 V8 cars.

Is it really a one‑time purchase?

Yes. Your license is a one‑time, machine‑locked key. Updates within the major version are free.

I'm new to tuning. Is it safe?

VAGPULSE shows power, torque and fuel headroom before you change anything, and it's honest about what each ECU can and can't do. Use a stable 12V supply and keep a backup, and the app walks you through it.

What if it bricks my ECU?

The honest answer: any tool that writes to an ECU carries risk, and anyone who tells you otherwise is selling you something. Here is what VAGPULSE actually does about it.

Reading is never risky. Diagnostics, fault codes, live data and reading your ECU out are all read‑only. They cannot change anything in the car.

It refuses to guess. VAGPULSE only writes Bosch ME7 petrol ECUs. It refuses a file whose part number shows it is for a different ECU, and a file whose checksum it cannot correct. Load a file it doesn't recognise and tuning is simply switched off, with the reason shown; it will not apply another ECU's addresses to your car and hope. Write only tunes VAGPULSE built: a map you edit by hand is not yet fully checksum-corrected.

It backs up every read, and checks the basics. Every time VAGPULSE reads your ECU it saves a backup, so read the ECU before you write. The app also checks supply voltage before a flash, because a sagging 12 V line mid‑write is the classic way ECUs are lost.

If something does go wrong, email support@vagpulse.com. Most “bricked” ECUs are recoverable by rewriting the backup.

Ready to plug in?

Get the software today and order the cable that does all of it. Download the moment you order; your cable is in stock and ships in 3 business days.

Get VAGPULSE — $249