Oil temp vs water temp for megasquirt?

[turbogrill]

Hi,

 

For various reasons it's much easier for me to feed the oil temp into Megasquirt instead of water temp. Megasquirt uses the water temp for initial enrichment during cold start, I don't think it's being used for anything else.

 

Besides being slower is there any other disadvantage with using oil temp instead of water temp? Could this causes issues if a non-thermostat oil cooler is being used? 

 

I monitor water temp as well but Megasquirt doesn't know about it.

[Ogren-Engineering]

Wont matter.  you can shut of the cool correction at any temp you like .  There is also a over hot retard toggle .  Make sure that they dont fight. 

[Ogren-Engineering]

 If you are running the ignition  from the crank, you can get it to cold idle pretty nice  with a warmup map  adding lead until  it hits 140 or so. 

[turbogrill]

thanks! 

 

I just realized that I have warmup enrichment disabled anyways. Car has started fine year round in Texas. Have no plans on racing in Alaska shortly. 

[mender]

Personally I wouldn't do it; engine temp needs to be within a fairly narrow range to be happy, and your A/F and spark tables should relate to that rather than oil temp. You could have an engine temp spike and your ECU wouldn't react in time to save the engine.

 

Find a way to monitor water temp, it'll save you a ton of work and money later on.

[Ogren-Engineering]

 I trim to the temp tables and remove those inputs for racing . Reducing inputs, and failure points in general, results in racing more often . Having the ECU take a false input  and cut the fuel off cuz of faulty temp signels  happens.