When the temp warms up outside my 2006 nissan titan wants to spit and sputter and not accelarate

Hello, You may want to try a water treatment additive for your fuel tank, just in case condensation is causing the issue. Next, check the fuel pressure at the engine, and scan for pending or stored trouble codes. There will be more to the story than you are noticing, but I am interested to see what conditions the engine control module (ECM) has to say about it.