Video 1: 2015 M4 with tune+exhaust vs 2010 GTR (tune + exhaust + Y pipe)
[video=youtube;WIIl3M_2pxA]https://www.youtube.com/watch?v=WIIl3M_2pxA[/video]
Video 2: Same M4 vs 2013 GTR (stock except for exhaust) - looks like M4 got a bit of a jump, but still
[video=youtube;fR7wbDQ9b80]https://www.youtube.com/watch?v=fR7wbDQ9b80[/video]
[video=youtube;WIIl3M_2pxA]https://www.youtube.com/watch?v=WIIl3M_2pxA[/video]
Video 2: Same M4 vs 2013 GTR (stock except for exhaust) - looks like M4 got a bit of a jump, but still
[video=youtube;fR7wbDQ9b80]https://www.youtube.com/watch?v=fR7wbDQ9b80[/video]