E90 320d M Sport
Had a decat pipe fitted to my Ph2 172 last week and all is well apart from when I boot it in 1st and 2nd or pull away on a hill.
The car makes a rumbling/grinding noise as if the exhaust is hitting the sub frame?? Thing is there is no play in the exhaust at all.
Any idea what it could be?
The car makes a rumbling/grinding noise as if the exhaust is hitting the sub frame?? Thing is there is no play in the exhaust at all.
Any idea what it could be?