SID path
Siemens / Continental SID803, SID803A or SID206. OBD port — ECU stays in the car. This desk exports a spec pack. A licensed tool on a cable applies it. Nothing here is a flasher.
On the car
Bulkhead, passenger side of the engine bay. On AU right-hand-drive cars that is the left side of the bay. The 16-pin OBD socket is under the dash, driver side.
SID206
Continental lid, later connector moulding. Common on AU facelift 2.0 TDCi.
Still an OBD job on a healthy ECU. Tool version matters more than on 803. Shops that only keep 803 profiles sometimes bounce these — that is a software issue, not a reason to open the case.
How it goes on
The path this engine is supposed to take. ECU stays in the car. Licensed tool on the 16-pin, ignition on, engine off.
When · Stage 1 and Stage 2 road files. Most Stage 3 writes too, once the hardware is on.
Not · Not a USB cable from this website. Not a phone app. Not a mailbox .bin dropped onto a clone tool.
ECU out, case open, boot access on the board. Recovery and stubborn reads.
When · An OBD write was interrupted, the unit will not handshake, or the shop needs a guaranteed read.
Not · Not a driveway pin-out. This desk will not list boot pads, test points, or opening tricks.
Board-level read and write on a programmer. Last-resort recovery and cloning.
When · The ECU is already dead, or a like-for-like unit is being prepared as a spare.
Not · Not a calibration step. Not how you install a Stage 1. Immobiliser work is a different job.
At the shop
Read the case. SID803, 803A or 206. Match the licensed tool profile to that lid, not to a Facebook listing.
Oil, fuel filter, DPF pressure, EGR, clutch slip test, no stored powertrain codes. A clean SID on a dirty engine is still a dirty job.
Stable 13 V+ for the whole session. A dying battery mid-write is the classic way to brick a SID. Headlights off, blowers off, doors shut.
The stock file comes off THIS ECU. Keep it. A spec pack is not a substitute for the original read. Never write a file built from a different car.
Zip, JSON, CSV or the work order. Tables are targets: torque, IQ, rail, boost, VGT, smoke, EGR, SOI. The tuner applies them in their software.
The pack has no firmware checksum because it is not firmware. The tool that writes the SID calculates and patches that. If a file has no checksum pass, it does not go on the car.
Ignition on, engine off. Do not cycle the key, slam a door, or pull the connector. Typical OBD write is minutes, not seconds.
No powertrain codes. Commanded vs actual boost, rail, IQ, soot. Fourth-gear slip check at 2,500 rpm before you call it done.
Selected file
First drive should feel like more mid-range, not a different engine. Watch clutch take-up for a week. If the DMF already talked, it will talk louder now.