Porsche Cayman ECU Clone Service

What this service is

A Porsche Cayman ECU clone lets you replace a failed DME without the dealer-only PIWIS session needed to code a factory-fresh replacement. We read the complete memory from your original DME — flash and EEPROM, including ISN, VIN, mileage, and all learned values — write it to a matched donor, and ship it back ready to start. Cayman R and GT4 owners especially appreciate this because factory tuning work is preserved.

Clone-only service — you supply both ECUs. This service requires two units: your failed original ECU and a matching donor ECU (same manufacturer part number and hardware revision), both supplied by you. We clone your original’s data onto your donor and ship it back. Not sure which donor matches? Email us a photo of your failed ECU label first and we confirm compatible part numbers before you buy a donor.

How to source a compatible donor

The donor does not need to come from a car with the same VIN or mileage — after cloning it carries your original data. What it does need to match exactly:

• Same manufacturer part number on the label
• Same hardware revision suffix (AA / AB / AC, or PCB rev number where printed)
• Same Bosch / Continental / Delphi / Denso hardware code where applicable

Good donor sources: eBay Motors, Car-Part.com, local salvage yards with parts-lookup, and make-specific forums / Facebook groups. Send us the label photo before you buy and we’ll pre-clear it.

Porsche Cayman DME platforms by generation

• 987 Cayman (2006–2012) — Bosch ME7.1.1 (base 2.7, S 3.4), Bosch ME9.1 (facelift 2.9 and 3.4 DFI, Cayman R)
• 981 Cayman (2013–2016) — Bosch MED17.1.1 / MED17.1.11 (2.7 and 3.4 DFI, GTS, GT4 3.8)
• 982 718 Cayman (2017–present) — Bosch MED17.8.10 (2.0/2.5 flat-four turbo, S, GTS 2.5), Bosch MDG1 (GT4 4.0 flat-six, GT4 RS, GTS 4.0, 25 Years)

Common Cayman part-number prefixes

Cayman DMEs share platform part numbering with Boxster and 911. The format is 98x 907 xxx xx: 987 for 2006-2012, 981 for 2013-2016, 982 for 2017+. 987 Cayman S 3.4 commonly carries Bosch hardware code 0 261 S00 930 (ME7.1.1) or 0 261 S07 440 (ME9.1). We match both the Porsche part-number suffix and the Bosch hardware code before writing the clone.

Special note for GT4 owners

981 GT4 (3.8 MA1.03) and 982 GT4 (4.0 9A2 Evo) carry factory motorsport calibration. A clone preserves this exactly — including any dealer-applied updates or third-party tune. A factory-ordered replacement DME arrives with base calibration and requires a full re-flash plus sometimes re-coding of the GT Sport Chrono timer.

How the Cayman clone works

1. Email us the label first (recommended). Send a photo of your failed ECU’s part-number label and we confirm the exact donor part numbers that will work — before you spend money on a donor.
2. You source a matching donor. Buy a compatible used ECU yourself through eBay Motors, Car-Part.com, or a salvage yard with parts-lookup. Must match manufacturer part number and hardware revision.
3. Mail us BOTH units together — your failed original ECU AND the matching donor you sourced, shipped in the same box with your order number. Prepaid return label available on request.
4. We bench-read your original — full flash plus EEPROM (immobilizer secret, VIN, mileage, learned values) captured intact. Most “dead” units can still be read on the bench.
5. We clone onto your donor — your donor is blanked, then your original’s flash and EEPROM are written one-for-one.
6. Bench verification — every clone is simulated before it ships. Immobilizer bytes, VIN string, and odometer confirmed to match.
7. We ship your cloned donor back — 24-hour turnaround from when both units arrive. Plug in, turn the key, drive.

What’s preserved

• Immobilizer ISN → your keys work without re-alignment
• Component protection across PCM, Stability Management, cluster
• Mileage, throttle and VarioCam learn
• Factory or aftermarket tune state

Pricing and warranty

$200 flat. Clone work only — donor ECU must be supplied by you. Nationwide mail-in. 24-hour bench turnaround. 12-month warranty. Email a photo of the DME label plus your Cayman’s year and engine code and we confirm compatibility before you ship.

Watch how our bench service works

How our ECU clone service works. Bench demonstration on GM — the read/write method is identical on your Porsche.