0.82 A/R turbine housing Audi 5 cylinder K26 - GT28/GTX
Turbine Housing, K26 flanged in and out for Audi 5 Cylinder K24/K26 direct replacement
- 4 bolt outlet GT28
- 0.82 A/R
- Fits GT28RS, GT2871R, and GT2876R turbos that have the 53.5mm turbine wheel
- Allows the use of stock Audi manifold and stock downpipe flanges.
Determine the A/R value correctly:
The A/R value determines the exhaust gas throughput of the exhaust housing and is therefore largely responsible for the performance of the turbocharger and engine. Basically, the following applies: The smaller the A/R value, the earlier the turbocharger responds, but on the other hand the exhaust back pressure increases and the maximum power drops.