Audi A4 2.0 B8 (Tiptronic)/Audi A5 (Multitronic) S line - Cat-Back Exhaust System with Dual-outlet Cerakote Black Trims Model_220i (G42) Coupe (21>) The M4 development has been

The M4 development has been based around a valved turbo back exhaust with the addition of a primary de-cat (catalyst bypass) exhaust upgrade

AEMnet allows additional X-Series Wideband Controllers to be daisy chained together (up to 16 cylinders) for recording AFR in multiple cylinders

enabling continued use of the M4 drive modes to adjust the dynamic of the exhaust

0 TFSI engine for vehicles including:

Audi A4 2.0 B8 (Tiptronic)/Audi A5 (Multitronic) S line - Cat-Back Exhaust System with Dual-outlet Cerakote Black Trims Model_220i (G42) Coupe (21>) The M4 development has beenOur range of Cat Back systems are perfectly suited to cater for anyone looking to improve their sound and aesthetics, designed as a direct replacement for the original system, available in multiple configurations enabling the owner to choose the increase in volume of their exhaust and or add a more suitably aggressive tone. All our products are made from 304L Aircraft Grade stainless steel. This quality material will ensure that your Cat Back system