Hey all, we just bought a 2008 convertible with 6 speed auto. My wife finally has her dream car. But shes picky about the MPG. Anything we can do for even a minor increase over stock? She does drive like a grandma, so thats a plus
You need a OBD scan tool that can read real time data to check the fuel trims and engine temps.
You say you have an aux temp gauge and it reads 180F. Where and how is this gauge connected? I cannot comment on anything other than the OE temp sensor that is located in the output side of the cylinder head. 180f sounds low as the engine has a 185 thermostat, but it depends on where your sensor is placed.
Again, reading temp with an OBD tool, it should be at least 205F.