Audi RS4 & Audi R8: Dynos for Your Viewing Pleasure

This is an article that many of us have been waiting for. With the Audi RS4 and the R8 sharing very similar powerplants -- the real question is -- which is better? While there is no question that the R8 outperforms the saloon sedan that is the RS4, which Audi vehicle has the best dyno peformance.

The results? The RS4 has a larger torque and mid-range than the R8. However, both are very impressive. Judge for yourself.



Here are a few excerpts:

Anyway, Audi's new R8 shares the RS4's engine, albeit with a couple of small changes. First, it has different intake and exhaust paths due to its mid-engine layout. Then, its dry-sump lubrication system allows the engine to be mounted lower in the chassis, permitting the use of a smaller, and lighter, flywheel.....

.....On the road, the R8's power delivery felt similar to the RS4's - it has a huge amount of torque available at any speed. Unlike the RS4, though, which hits hard at 3000 rpm and stays there, the R8's torque output builds with revs, gradually coming to its peak.....

.....The dyno chart confirms what we felt in the seat of our pants - the RS4 has a bigger torque plateau in the mid-range, where the R8's torque curve rises more slowly. Both engines, however, have torque curves so robust that they would have been unimaginable only a few years ago.

[Source: Automobile]

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