audi s5 middle resonator replacement.

[weemanno1]

Afternoon guys ive got a rattle form my exhaust and need to replace my centre resonator. ive replaced the dp's with new resonated custom ones as the flexi's had failed. has anyone just replaced there centre res for a hi flow version or resonated x pipe with the rest of the system as stock? ive tried to find a thread as i imagine this will have happend to someone else.
Many thanks in advance!!