yeah the 2012 nismos come with 88kpa pressure cap which is way less than 2009 and even the upgraded nismo am talking about thats why i changed , so who ever has the old caps is lucky , hmmm not sure about which cap to change ? we changed both and its running fine but why would nissan change the set up ? their has to be a reason for going to a less pressure cap and even change places putting the one that has a pressure relief to the water resevoir place and the one to the hose just has a nissan sign with no pressure relief inside the cap and no pressure reading on top . come on guys jump in and share