Getting a low deep vibration at low revs when accelerating hard from pull away. Doesnt happen if revs raised gently. Sounds like its coming from centre of car, and back end.
Imagine its the exhaust. Even makes the dash rattle. lol
Its a standard vauxhall exhaust with cat, and twin outlets.
Kind of got used to it now, but reading an old post without an answer on something similar, has made me wonder why its happening.
Also happens when slowing down as the revs drop low.