Help needed A4 2.0T engine very rough and no power
My 2006 2.0 TFSI A4 has been a joy for the last 9 months, I went for a drive tomight and accelerated off of a roundabout, there was an immediate loss in power although the car still drives very slowly, the engine now sounds like a bag os spanners and very lumpy.
It's quite lumpy on idle and sounds horrific when revving, a bit like a subaru boxer engine with a bad exhaust.
I had it remapped last summer with no problems at all.
I've no idea what might be the cause, I've defo not put diesel in it.
Any help would be fantastic