The styling touches are quite subtle, and yet quite cool. There are new 22-inch wheels and they can also hook you up with suspension and brakes.

But the main feature is the power upgrade, where thanks to some ECU upgrade and a new exhausts system you get 575 hp and 820 Nm (598 lb.ft) fo torque. This package costs £7990.

If that’s too expensive for you, you can opt for the less powerful stage one package which has 560 bhp @ 6150 rpm, and 790 Nm (576 lb.ft) of torque at 3340 rpm, and costs only £2900. Both models have a limited top speed of 315 km/h.

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858 hp to be exact. The car’s innocent 3.6 liter flat-six has gone under a deep surgery again to generate this huge amount of horsepower. So the SPR1R has a power to weight ratio of 655 per ton.

As for the performance 0-62mph (100kmh) time is met in just 3.0 seconds, and you’ll be able to hit 236 mph flat out, if you have the guts!

Other new features of the car over the last model includes adjustable traction control system, managed via a touch screen mounted in the centre console, data logger and lap timer, lightweight 20-inch wheels, and carbon fiber rear wing.

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The car’s 6-cylinder, 3,8 liter boxer engine has been deeply modified to deliver 580 bhp @ 6500 rpm, meanwhile peak torque hits 800 Nm (590 lb.ft) at just 3500 rpm.

To achieve this power, APS’ 997 Turbo features a stainless steel sports exhaust system with high flow catalytic converters and two 70mm ‘twin’ tailpipes.

As for the performance, the car now does o to 60 mph in 3.1 seconds, with a top speed of approximately 197 mph. Mind you that’s estimated as they have not been measured officially yet!

Sportec 580 upgrade package is available now from sole UK concession APS of Brackley, priced at £9400.00 fitted

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With this much power under the bonnet, this Panamera can now accelerate from zero to 100 km/h in just 3.8 seconds, and has a top speed of 315 km/h.

Other modifications include a new adjustable air suspension, and 22-inch wheels with Continental tires as well as a high performance braking system, and an active exhaust system for a better soundtrack.

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Of course the S4 is not underpowered with its 333hp three litre V6 compressor, but Sportec technicians managed to extract a good 425 hp out of it. The torque now clocks at 520 nm. This has been done by upgrading engine’s electronics and using a high performance sport air filter.

The performance of the Sportec S4 Avant is really remarkable considering the class of the car. It accelerates from zero to 100 km/h in 5.2 seconds, and although the top speed is still electronically limited to 250 but it takes much less time to get to that!

However Sportec is not content with solely an upgrade. A special sports silencer with four end pipes – two pairs on either side right and left – provide a more sporty sound. A braking system on the front axles enlarged to 380 millimetres ensures improved braking power. On the other hand chassis clearance has been reduced as Sportec has fitted the Audi with a suspension kit shortened by a progressive 25 millimetres.

As for the looks, you get new front and rear spoiler which not only look meaner but also help with the aerodynamic, plus an air diffuser with integrated mufflers. All of these parts are made of carbon fiber.

Sportec’s 9×20 inch wheels wrapped with 245/30 rubber complete the sport appearance of the S4 Avant.

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