⚙️ Specialist course · PDF ebook · 10 chapters

DSG / TCU
tuning an automated gearbox

Your customer drives away with a Stage 1, and three weeks later he is back: "it doesn't pull in third any more." It isn't the engine. It's the gearbox cutting the request back, silently, without a single warning light. This course teaches you to treat the transmission as what it really is: the part that decides whether your engine work was worth anything.

39,90€
Instant access after payment PDF ebook · 10 chapters · Delivery checklist
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This course is for you if…

🔧
You already tune engines
You can read, write and remap an engine ECU, but you have never touched a gearbox. You send that work elsewhere, or you turn it down.
📉
Your Stage 1 is capped and you don't know why
The log is clean, boost is on target, and acceleration still flattens out on certain gears. Chapter 4 explains exactly what is happening.
🏭
You want one more service to sell
DSG work bills well, gets asked for often, and few workshops do it properly. It is a specialty, not an add-on.

The programme — 10 chapters

01
A TCU is not an engine ECU
An engine ECU commands combustion. A gearbox ECU commands friction. The three families you will meet, and what each one refuses to forgive.
Wet vs dryTorque converter
02
Identifying the gearbox and its ECU
The three identification sources ranked by reliability, what is actually inside a mechatronic unit, and what fails in it — with how to spot it before you tune.
HW/SW references
03
Reading and writing a TCU without losing it
A bricked engine ECU leaves a car sitting on its wheels. A bricked gearbox never leaves park. The two-read rule, and the pre-write checklist.
OBD · Bench · Boot
04
Torque limiting — the ceiling that cancels your Stage 1
The core chapter. How the gearbox asks the engine to back off, how to see it in a log, and the sensible four-step method that does not sacrifice clutches.
Torque modelCustomer script
05
Clutch pressures
The most delicate value of all: too little and it slips and burns, too much and it hammers. The four symptoms felt from the driver's seat, plus adaptations and how to measure slip.
SlipAdaptations
06
Shift time — what the customer is actually buying
The change he feels immediately, and the one that ruins reputations when done badly. The three phases of a shift, and why upshifts and downshifts are not the same job.
OverlapPressure ramp
07
Shift points, kickdown and Sport mode
The least risky and most customisable part. Hysteresis and why a gearbox starts hunting. Why the best job often means leaving Drive mode alone.
HysteresisLock-up
08
Launch Control
The most requested and least understood function. The enabling conditions are not red tape: they are what prevents the launch that breaks things. And what the ECU records.
Launch RPMCounters
09
Validate, deliver, or refuse
The five-step road test, the eight-point delivery checklist, how to document the job to protect yourself, and how to price it properly.
Road testPricing
10
Three real cases, walked through
A DQ250 capped in third, a DQ200 on a built engine you have to turn down, and a ZF 8HP the owner calls "soft". Symptom, measurement, decision — every time.
Case studies

What this course does not do

It does not teach you to read an ECU — that is the prerequisite, and it is covered by "Reading & writing an ECU". It does not hand you ready-made values to copy into a specific gearbox: those do not exist, and anyone selling them is selling you a destroyed clutch. It teaches you what you change, why, in what order, and when to say no.

📊

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