Although much of the car's underpinnings were manufactured by Audi, assembly was handled by Porsche at their plant in Zuffenhausen, Germany which had become available after discontinuation of the Mercedes-Benz E500, which Porsche had manufactured under contract.
Like the rest of the vehicle, the RS2's 5-cylinder engine was based on a unit that Audi already produced, although Porsche considerably modified the engine; the standard KKK turbocharger was switched for a larger unit, along with a heavy-duty intercooler and higher flow fuel injectors, a newly designed camshaft, a more efficient induction system, and a low-pressure exhaust system replaced the standard fare; a new Bosch-supplied engine management system (ECU) controlled the engine.
Audi's quattro permanent four-wheel drive system was standard, and Porsche-designed braking and suspension systems replaced the standard Audi 80 equipment.
Это вполне радикальные изменения!
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