There has been a little bit of debate on how Nissan improved power from 485 hp for the 2010-2011 (480hp 2009) GT-R, to 530 hp for 2012. There is an actual change in the rear section of the exhaust, that was documented by Litchfields in the UK.
A few people have mentioned that the midpipe/y-pipe is also different. Today, I went and took a few pictures, and measured a midpipe/y-pipe that came off a 2009 GT-R, and a 2012 GT-R.
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| 2009 and 2012 midpipe |
Flanges are the same. ID of the piping is the same.
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| 2012 and 2009 midpipe |
The section between the flexpipe and resonator is the same size piping.
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| Which do you think is which? |
The rear section of the midpipe/y-pipe, behind the resonator, on the 2012 looks a little different, but the ID and OD are the same. The two midpipes are interchangeable.
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