Luxury with extra power: Audi A8 4.2 TDI with 520 hp thanks to the Turbo Center!

Reading time 3 Min.

The Audi TDI A8 4.2 the D4 series, a noble sedan with power under the hood? Originally, thanks to the V8 biturbo diesel, it delivered an impressive 350 hp to the asphalt, and later even 385 hp. But sometimes, that's what the professionals from... TurboZentrum, it can be more. That's why they have one Stage 2 optimization developed the machine to whopping 520 PS heaves! So now it's about more than just simple things Chiptuning on the Audi A8 4.2 TDI D4 from TurboZentrum. The core elements of increasing power lie in the revision and optimization of the Turbo. Let's take a quick look at the technology behind it. This plays a role in Stage 2 optimization compressor (wheel) a central role. In order to carry out such an optimization skillfully, it is not just a matter of simply replacing it with a larger one.

Audi A8 4.2 TDI (D4) by TurboZentrum

No, precise calculations of wheel dimensions and contour are required here to ensure that everything works harmoniously with the compressor housing and the exhaust shaft. It is not uncommon for tuners to only take what is currently in the range. Not the TurboZentrum! Here, attention is paid not only to the relationship to the exhaust side and thus to the ultimate performance, but also to the ability compressor wheels Milling according to tailor-made specifications becomes one optimal balance between performance development, responsiveness and top-end performance. An additional highlight: The fine-tuning measure not only has a positive effect on the engine's power, but it also reduces the load on the turbo.

durability is the focus

The turbo can deliver the standard air mass even at significantly lower supercharger speeds, thus enabling a tuning that also keeps the durability of the V8 in mind. And because with so much extra power, durability shouldn't be neglected, the compressor housing Not only is the size fine-tuned and the gap optimized, but all Stage 2 upgrades even include reinforced bearings. This is how the TurboZentrum ensures that the inflated A8 4.2 TDI not only delivers better acceleration and top speed values, but also lasts. Photo credit/source: Turbo Center Berlin

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