Audi 4.0l TFSI Turbosystems Hybrid Turbochargers STAGE 1

Upgrade STAGE 1 turbocharger kit for Audi S6, RS6, S7, RS7, A8, and S8 models (4G 4.0l TFSI) This STAGE 1 upgrade kit is designed to fit directly onto the original exhaust manifolds. What has been upgraded? This is a lighter version of the 4.0 TFSI engine's upgraded turbos – a complete plug & play solution. Both turbocharger units are equipped with double ceramic ball bearings. The compressor wheels have been replaced with larger, reinforced, billet-machined impellers that can withstand heavy loads at high boost pressures. The turbine wheels have been enlarged. The turbocharger housings have been refurbished, the shafts replaced, and the entire assembly balanced using the VSR method. Power range: 800+HP