You may know that VAG makes a 2.5-liter five cylinder for the Jetta and base Golf. That engine is widely considered to be a noisy, underpowered, inefficient dud, and is set to be dropped (see what I'm talking about?) in favor of a smaller turbo four. But thanks to some heavy re-working by the mad scientists at Quattro GmbH, this turd gets polished into a weapon of mass destruction.
Audi's 2.5 TFSI Is Five Cylinders Of AwesomeAudi helps us break down why it's so great, starting with the cylinder block. Because of its short overall length, it works well in transverse applications. The block itself is made of high tensile vermicular-graphite cast iron, which means it is both light in weight and able to withstand incredible stress.
The cylinder head is similar to the 2.5-liter VW engine, but here it has been thoroughly modified to provide more durability. Changes include a different aluminum casting alloy, sodium-filled exhaust valves for better cooling and a new intake port.
Other additions include direct injection, a new engine management system, an intercooler and a K16 Borg-Warner turbo good for up to 17.4 psi.
With these goodies, the 2.5 TFSI prdouced 360 horsepower at 5,500 rpm and 343 lb-ft of torque between 1,650 and 5,400 rpm in TT RS form — enough to shoot that car from 0 to 60 mph in a mere 4.1 seconds. In the RS3 Sportback (which really should be sold in America, Audi) the engine has 340 horsepower and 331 lb-ft of torque; that hatch will do 0 to 60 in 4.6 seconds. Pretty incredible for a car that only displaces two-and-a-half liters.
Check out this video with the sound:
If the engine layout is the same.. I wonder if it will have something similar to our bevel gear.. maybe something compatible to our R's weak link.