Skip advert
Advertisement

Mercedes-AMG GT S breaks 205mph with unofficial tuning kit

Over 600bhp from Mercedes' sports coupe with latest performance tuning

While some might decry the move towards turbocharging and ever more electronic control in modern performance cars, there’s little doubt it’s made tuning more accessible than ever.

Nowhere is this more evident than in the highest performance vehicles. German firm performmaster has turned its attention to one of the best – the Mercedes-AMG GT S – and the result has lifted its top speed to 205mph.

Advertisement - Article continues below

Available for both the GT and the GT S, the PEC tuning module can be installed alongside the standard ECU with three OEM plugs, eliminating the need to hack into cables and ensuring the car can be returned to its standard output at any time.

That output increases from 456bhp in the GT and 503bhp in the GT S, to 603bhp from either car. As a result, the standard 189mph and 193mph top speeds are lifted to 205mph.

Acceleration also improves by a healthy margin, dropping the 0-62mph sprint from 4sec in the GT and 3.8sec in the GT S, to 3.6sec. Up to 124mph from rest, the difference is even greater – the tuned model cuts 1.3 seconds from the GT S’s 11.5sec figure.

Similar performance will soon be available in the Mercedes-AMG C63 saloon and estate, too – since both use the same 4-litre, twin-turbocharged ‘hot V’ as the range-topping coupes. Peace of mind for owners comes in the form of a 24-month or 100,000km (62,137 mile) warranty for the entire engine and transmission.

As further example of what simple electronics tuning can achieve, performmaster notes that other packages can take the A45 AMG (and similarly-engined models) to 405bhp – greater even than Mercedes’ own revised A45 – and the CLS 63, E 63 and S 63 AMGs to a healthy 692bhp.

Skip advert
Advertisement

Recommended

Porsche 718 Cayman GT4 RS review: the ultimate mid-engined sports car?
Porsche Cayman GT4 RS
Reviews

Porsche 718 Cayman GT4 RS review: the ultimate mid-engined sports car?

The Cayman GT4 RS is one of the most extreme road-going Porsches of all. It tripped up at eCoty 2022, but later examples we've tried have hit the spot
26 Mar 2024
Mercedes-AMG GT 63 2024 review – is AMG’s coupe finally a Porsche 911 beater?
Mercedes-AMG GT 63
Reviews

Mercedes-AMG GT 63 2024 review – is AMG’s coupe finally a Porsche 911 beater?

A new chassis, tweaked V8 and a larger, more practical interior provides AMG’s new GT 63 with everything it needs to take on the best in the business
22 Mar 2024
Porsche 911 Carrera T 2024 review – one of our favourite modern-era 911s
Porsche 911 Carrera T
Reviews

Porsche 911 Carrera T 2024 review – one of our favourite modern-era 911s

The lighter, sharpened-up Carrera T is one of the best 911s you can buy today, and an example of why less can be so much more
20 Mar 2024
Aston Martin V8 Vantage S (2011 - 2017): a stunning analogue Aston for hot hatch money
Aston Martin V8 Vantage S
Features

Aston Martin V8 Vantage S (2011 - 2017): a stunning analogue Aston for hot hatch money

The Vantage S is a V8 Brit that’s becoming even more appealing with age, especially given its price point in 2024
19 Mar 2024
Skip advert
Advertisement

Most Popular

The new Mercedes-AMG G63 has arrived, and it still has a V8
Mercedes-AMG G63
News

The new Mercedes-AMG G63 has arrived, and it still has a V8

Some of Affalterbach’s range-toppers are swapping eight cylinders for four, but the AMG G-class retains its V8 for 2024
26 Mar 2024
Land Rover Defender OCTA: twin-turbo V8 and McLaren-style suspension tech for hot off-roader
Land Rover Defender OCTA – front
News

Land Rover Defender OCTA: twin-turbo V8 and McLaren-style suspension tech for hot off-roader

The OCTA promises to be the fastest, toughest and most capable Defender yet when it launches later this year
26 Mar 2024
The Mercedes-AMG GT 43 is a four-cylinder, rear-wheel drive Porsche 911 rival
Mercedes-AMG GT 43 – front
News

The Mercedes-AMG GT 43 is a four-cylinder, rear-wheel drive Porsche 911 rival

The AMG GT has gained a 415bhp four-cylinder engine with F1-derived turbocharger tech, but it won't be sold in the UK
19 Mar 2024