[DC]

I've got a swapped-in Dodge Magnum 5.9L V8 engine in my 2000 Jeep TJ and I am about to do the plenum plate upgrade to my factory intake manifold.

While I am doing this work, I plan to replace the thermostat. I could of course just go with the same 195? thermostat that the factory used for this engine, but I have previously heard that a lot of guys have gone with a 180? unit.

I would also like to go with a 180? thermostat, however, I want to make sure that I am not going to get into any unintended consequences from a performance perspective by doing this. For example, if the PCM is looking for the engine to come up to operating temperature, I don't want to get into any potential fuel mixture or advance curve issues with the PCM wrongly interpreting the lower engine operating temp as an indication that the engine hasn't fully warmed up yet.

So, if anyone with either a Dodge Magnum 5.2L or 5.9L has switched to a 180? thermostat, or is otherwise knowledgeable about the way the PCM looks at the engine operating temp (as a function of coolant temp), please let me know if you have had any adverse performance problems or whether this move wouldn't be recommended for some reason.

Thanks in advance,
Don