BMW B58 F3X M240i 340i 440i Downpipe exhaust upgrade

Active Autowerke BMW B58 Downpipe - now includes turbo flange gasket IN STOCK NOW - CONTACT ONE OF OUR RACE DEALERS TO PURCHASE ***Before your order ships you MUST ensure that your customer signs and returns the Race Use Only Waiver sample available HERE. If you want to send us a copy, please email, fax or take a photo of the completed form. You can email it to your sales rep or to info@activeautowerke.com and you can fax it to us at (305) 253-8921*** BMW introduced a new valvetronic, single turbo version of its direct-injection engine for the later F-Chassis models beginning in 2016. The Active Autowerke B58 downpipe for the M240i, 340i and 440i 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 B58 is quite restrictive, which results in slower exhaust gases and slower turbo spoo