Originally Posted by b15

Altimas and Maximas never had the "Rev Up". Both Autos and MTs had the standard DE. Common issues were the timing chain tensioners and some had oil consumption as well (not sure if it was the same reason as the Rev Ups though) The 07+ VQ35DEs got new heads/intake manifold, valvetrain, tuning, etc resulting in the 07+ having a much better top end stock than the prior VQ35DEs. They also have two VIAS vs one in the older gens. The only issue that seems to be popping up now is in the process of upgrading everything, Nissan messed with the HG and some newer VQ35DEs have a slow HG seep. Nothing major, and unless you're anal about your car like me, probably won't ever cause any issues. Other than that my VQ35 was a great motor and I wish I kept it!