Originally Posted by Chuck33079

The Mishimoto thermostat is too cold, and will likely fail closed and kill your motor. And you wouldn't be the first case of that happening. The one from a 2008 G37 is really the only option I'm familiar with.

If they're the stock injectors from the kit you may be running out of fuel system headroom unless you upgrade. The oil cooler is too small for a boosted car in TX summers, especially with a Nismo. Put a fan on it at the very least.

Check out a bigger heat exchanger from Frozenboost as well. The Stillen kit often has heat issues and we live someplace hot. Go overboard on cooling and heat management.