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I'm not sure why, but looking through parts catalogs, the 2010 and 2011 Audi A3 TDI are still listed as having the CBEA engine. This was the engine in the 2009 Jetta TDI. In 2010, some 2.0L VW TDI engines changed from CBEA to CJAA. The differences aren't fully known yet.
From 09-10 they did change the gearing of the manual transmission. The table of gear ratios are listed in the FAQ article of 09-10 changes.
One thing I did notice was that the Jetta TDI changed from a 1 piece DPF - NOx catalytic converter to a 2 piece unit from 2009 to 2010. The 2010 and 2011 A3 and Golf TDI are still listed with a 1 piece DPF-NOx converter.
Also, the part number for the Audi A3 TDI fuel filter is 3c0 127 434. The article http://www.myturbodiesel.com/1000q_how_to/a5/09Ffilter.htm is combined with the VWs because it's pretty much the same except for different sized lid bolts.
From 09-10 they did change the gearing of the manual transmission. The table of gear ratios are listed in the FAQ article of 09-10 changes.
One thing I did notice was that the Jetta TDI changed from a 1 piece DPF - NOx catalytic converter to a 2 piece unit from 2009 to 2010. The 2010 and 2011 A3 and Golf TDI are still listed with a 1 piece DPF-NOx converter.
Also, the part number for the Audi A3 TDI fuel filter is 3c0 127 434. The article http://www.myturbodiesel.com/1000q_how_to/a5/09Ffilter.htm is combined with the VWs because it's pretty much the same except for different sized lid bolts.