Audi S8: 1,080 HP w/ Stock Internals & Single Turbo

V8 Engine’s 4.0L Power Limited.

By sharing components, including its engine, the Audi S8 and RS6 are strikingly close to providingemitting Audi’s characteristic RS-like power. The British tuning company Hass Performance managed to make modifications to a seeminglyunaltered stock S8 so that it now boastspresents an incredible 1,080 horsepower from its 4.0-liter V8, which is double the original output.

What really stands out is the way this tuner obtained such vigor, even with the motor running on the base internals. The boosted V8 instead runs along with an SRM low-pressure fuel supply, an Autotech above-force fuel pump, supplemented fuel tubes, a Merc Racing fee cooler core, a Prometh reach injector, and 4,000 cc meth injectors.

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The substantial power surge is attributed to the G42-1200 turbocharger, replacing the two-turbo arrangement seen in store-bought models. This provides 929 lb-ft of torque, comparable to that generated by the Manhart Performance BMW M5 Competition’s 4.4-liter dual-turbo V8 outfit, which harnesses an S63 engine fitted with modified internals.

If that isn’t enough to get your attention, the turbocharging of the Audi S8 uses some components that are integral parts of the actual manufacturer’s kit, containing a normal eight-speed auto transmission set, stock differential, original suspension and the production brakes. Although, as was said by the modifier, the S8 provides huge braking ability from the beginning anyway so it isn’t necessary to changes them unless you plan to really put the pedal to the metal, similar to what happens on the German Autobahn with no speed restrictions.

However, the suspension arrangement needs to be overhauled in order to accommodate the tremendous surge in power. The usual all-wheel drive struggled to maintain traction when pushing the vehicle hard, resulting in irregular straight line acceleration. With a better integrated suspension system, the engine should have an easier time getting the power to the ground.

Hass Performance refrained from making public the outlay needed for this particular customer’s car. Nevertheless, the builder did prove that through precise adjustment and modifications, even under the circumstance with removal of a turbocharger and stock internals, they had still gotten the engine to generate double the power.