PORSCHE 991 TURBO TUNING

The 991 Turbo has a twin-turbocharged 3.8 litre engine generating 520 PS (382 kW; 513 bhp) and 620 N⋅m (457 lb⋅ft) of torque. The S version has 560 PS (412 kW; 552 bhp) and 700 N⋅m (516 lb⋅ft) of torque, but the torque is pushed to 750 N⋅m (553 lb⋅ft) with overboost. Both vehicles have all-wheel drive and a seven-speed dual clutch sequential transmission. The Turbo S can reach 100 km/h (62 mph) in 3.1 seconds as claimed by Porsche but has achieved 2.6 seconds by many car magazine tests.

At GCAP we have designed a package to further refine the German sports car's character with a few simple modifications.

Exhaust

We use an Akrapovič exhaust system on our tuning packages for this vehicle.

It's a challenge to develop an aftermarket exhaust for the great 911. The Akrapovič engineers have prepared a superb system with a dual nature. By using the optional Akrapovic sound kit, the driver can fully control the exhaust valves, which are controlled by the car’s electronics if no optional part is used. When the valves are closed, the 911 sounds deeper than stock, but not louder. When the valves are open, expect a completely opposite, pure racing sound, with adrenaline-pumping bangs. Keeping the drone effect away was one of the main tasks. The Slip-On is made of special heat-resistant durable titanium alloy, with computer-designed premufflers, main mufflers, and pipes to deliver more power, more torque, weight reduction, and improved throttle reponse.

Software

We have developed our own software to increase the cars performance. This comes in two forms. A stage 1 map (I.E. a software only calibration with no hardware changes) and a stage 2 (with our Akrapovič exhaust system).

When tuning we measure afr, ignition timing, intake temps, EGTs etc. to ensure our tune is as safe and reliable as possible whilst drawing the most out of your supercar.

 

We have seen gains up to 630bhp and 660lbft.

Brakes

As with most Porsche, the brake system is excellent. However we can offer modified braided brakes lines. Our lines have a stronger wall density delivering a more precise and accurate brake pedal feel. This translates into more confidence in your supercar.

QUICK LINKS

ADDRESS

GCAP Performance

6 Powis Mews

Notting Hill

London

W11 1JN