My 2.0TFSI Avant Quattro (manual) is experiencing slight issue as the revs normalise back to idle. I experience this whilst in traffic (on and off the acceleration) or as I approach lights to come to a stand still. The engine seems to fluctuate in revs for about a second before normalising to 800rpm. Its fine once it gets moving - theres no loss in power or hesitation and the car has never cut out. I have only been experiencing this in the last 2 months or so. The car has done 81,000 miles and has a full history. Remapped by AMD and has the revised diverter valve. Ive not had it in to get it checked over, just yet. However, I have a OBD reader and there are no faults logged. Has anybody experienced this or have an idea where the problem lies? Thanks in advance.