Love the earlier post comparing engine problems on a 2003 Altima with the GTR!
Maybe .. just maybe.. they are 2 rather different vehicles?
Been lucky enough to drive one of these on track - and the one thing i know is i can never own one of these as i wouldnt have my licence for very long if i did!!
Change the Y pipe for not much money and its even better.
Been there, done that, driven the 'Ring