Accessport V3 ECU Calibration, 911 Turbo / Turbo S / GT2 RS (991.2)
The 991.2 calibration, and the only entry here with before and after wheel figures from the same dyno.
Engine ManagementIn productionconfidence: medium
Manufacturing
| Manufacturer | COBB Tuning |
|---|---|
| Origin | 🇺🇸 United States Vendor head office — place of manufacture not stated |
| Process | Electronics / Software |
| Additively manufactured | No |
Published figures
| Power gain | +45 hp |
|---|---|
| Basis | Published by the manufacturer; not independently verified. |
| Notes | Turbo measured 493 whp / 485 wtq stock and 538 whp / 591 wtq on Stage 1; Turbo S reached 594 whp / 639 wtq. Recorded gain is the Turbo's wheel delta — unusually, these are wheel figures on both sides rather than a crank claim. |
Fitment
| 991.2 | 911 Turbo, 911 Turbo S, GT2 RS |
|---|
Road use. ECU calibration affects emissions compliance and warranty.
Sources
- Porsche 991.2 Power Gains with Accessport Tuning — COBB Tuning, accessed 2026-08-17