For a turbo conversion this exhaust manifold completely in stainless steel 2.2mm can be a very good choice for all Bmw engines M50. With T4 flange for Borg Warner turbos. Tested already on 525i up to 1000hp with excellent performance. It’s available with little extra external wastegate 44mm or 60mm and with Egt.
Delivery time 15 days from order.