Astra J VXR Stage 1 Remap 305-320hp V-Class (W447) Pre-facelift When we ran our CAT

When we ran our CAT backed performance exhaust development vehicle on the dyno with this intake it reached figures of 296bhp and 310lb

On the third pull inlet air temps stayed at a steady 40°C and with the highest BHP gain at 307

these CUPRA Leon performance exhausts are TIG-welded from high-quality T304 stainless steel and the mandrel-bent pipework has been developed in 3in (76

The second objective was met by designing an organically shaped system with a custom rounded panel filter to ensure the airflow path contained no sharp corners and therefore allowed for the flow to remain laminar

thus improving the combustion in each cylinder

Astra J VXR Stage 1 Remap 305-320hp V-Class (W447) Pre-facelift When we ran our CATWP Stage 1 Wayside Performance Custom ECU Calibration The Astra J VXR is one of the best value performance cars on the used market, and the A20NFT engine under the bonnet is one of the strongest reasons why. Producing 276hp and 295ft lb from the factory, it's already a potent unit but Vauxhall's standard calibration leaves a significant amount of performance untapped, and our WP Stage 1 remap is the most effective single modification you can make to