This Audi A3 TFSI 3 Door performance exhaust is made in 3"/76.2mm pipework and fits from the catalytic converter section backwards (Cat-back) these exhausts replace the centre and rear sections.
The resonated sports exhaust includes the centre silencer and has a subtle but sporty tone. The non-resonated sports exhaust makes the system louder as it excludes the centre silencer and therefore, has a sportier exhaust note.