Akrapovič Porsche 911 (991/991.2) GT3/GT3 Touring/GT3 RS Evolution Header Set
The Evolution Header Set transforms the slip-on system into a full Evolution Line system, designed to noticeably increase power at higher revs. With meticulous attention to detail, including components cast in Akrapovič’s own titanium foundry, the craftsmanship and coating finish of this system are truly impressive. The newly developed exhaust manifold, which incorporates 100 cpsi sports catalytic converters and side mufflers, is specifically designed to boost power and torque. The Evolution Line makes use of integrated catalytic converters and new exhaust valve functionality to deliver a truly exhilarating experience. When the valves are open, the Evolution Line produces a sound comparable to the top-performing Evolution Race system, but also offers the flexibility of a quieter sound level when the valves are closed, making it ideal for more everyday driving conditions. The system’s significant weight reduction behind the engine and rear axle enhances handling and improves overall performance. The Evolution Line is finely tuned to deliver a sportier, more aggressive sound—especially in open valve mode, where the sound intensifies as the engine revs higher—while also enhancing performance, offering an even greater sensory experience.
When installing Akrapovič aftermarket optional link pipes with sports catalytic converters, or without catalytic converters, which are intended for closed-track use only, remapping the ECU is mandatory. For any Akrapovič aftermarket exhaust system developed for closed-track use, we recommend remapping the ECU to avoid potential “check engine light” warning signals.
THIS PRODUCT DOES NOT MEET EMISSION COMPLIANCE REQUIREMENTS FOR ROAD OR HIGHWAY USE.
Exhaust Data
| Unit | Stock | Akrapovič | Max gain | |
|---|---|---|---|---|
| Max. power | kW | 345.7 / 8450 rpm | 351.2 / 8400 rpm | + 10 / 8000 rpm |
| HP (m) | 470 / 8450 rpm | 477.5 / 8400 rpm | + 13.6 / 8000 rpm | |
| HP (i) | 463.6 / 8450 rpm | 471 / 8400 rpm | + 13.4 / 8000 rpm | |
| Max. torque | Nm | 426.2 / 6450 rpm | 437.4 / 6350 rpm | + 27.3 / 3850 rpm |
| lb-ft | 314.3 / 6450 rpm | 322.6 / 6350 rpm | + 20.1 / 3850 rpm | |
| Weight | kg | 38.9 | 24.8 | – 14.1 |
| lb | 85.8 | 54.7 | – 31.1 | |
| % | – 36.2 | |||
| Inst. time | min | 200 |

