Besides better gas mileage and for tuning purposes does it have any other benefits for keeping the lock up function. I personally don't like it and am trying to decide if I want to keep it or not.

 

Well the trans does run cooler in normal driving with lockup, Im not sure but can you tune lockup out all together?

 

Yeah just set the lockup minimum speed to 255mph in all gears..

 

ok well that wouldnt work for me cause then I would have to try and see if it would lol

 

Ok, then set it to unlock at 255 MPH and leave the lock up settings stock. Or set the minimum and maximum TCC duty cycles to zero (0).

 

The last time I had my car tuned I had him set the lock up so it only came on when I was on the highway. I think it was set at 65mph. My normal tranny temp. driving around town without lockup is anywhere between 120 to 150 degrees.

 

When a torque convertor is locked it is most efficient, reducing heat and power loss.

 

120 is WAY too cold...

 

Why is 120 too cool. Usually when the converter is locked up on the highway it is running at 100 degrees. I thought the cooler the better.

 

nope, 175 is the perfect temp for a trans. The fluid has detergents and additives that arent active when the fluid is too cold. 100* is very bad.