Active Autowerke Catted Downpipe with Active Cat B46 BMW 120i, 220i, 230i, 320i, 330e, 330i, 420i, 430i, 630i, 730i & xDrive G & F Chassis

This product is for Racing Competition only and is not legal for use in highway or street vehicles or other non-racing competition off-road vehicles.Please input your VIN as the mounting brackets change depending on Chassis. Not all G Chassis cars have the G Chassis downpipe brace, some have the F chassis brace.Active Autowerke BMW B46 Catted Downpipe with Active. BMW introduced a new valve-tronic, single turbo version of its direct-injection engine for the later F-Chassis models beginning in 2016 and continuing into the G-chassis models. The Active Autowerke B46 downpipe for the 230i, 330i and 430 helps unleash some of the potential that is restricted by the OEM downpipe.Turbochargers are powered by spent exhaust gases created during the combustion process. The quicker these gases are evacuated, the better. Unfortunately, the factory down pipe in the B46 is quite restrictive, which results in slower exhaust gases and slower turbo spool. The Active Autowerke F-Chassis B46 Signature dow