Diablosport Forums

After installing tuner to my 2006 f250 6.0 it seems that the trans is slipping it doesn't shift as hard as it did stock,Is this normal or am I doing somthing wrong?

The tunes do not alter the TCM in these trucks, so it should not affect anything.
If using the higher hp tunes (85, 100) you may be making too much torque for the tranny to handle, thus causing slippage.

Thanks

Im using the econo tune. any suggestions

Should not be any issues with the tranny with the 65 hp tune.
If the truck has alot of miles on it the tranny may need to be upgraded.

Thanks

I HAVE AB OUT 57000 NOW.