Any programmer ... for instance, a SCMT or super chips mirco tuner.
I'm sure others will chime in with their favorite programmers and stuff, but I am only suggesting an inexpensive programmer.
They have 3 power modes, and you should not tow using the super duper 3rd mode. (highest gains)
We have sponsors on this site that sell them. Click on "links" and go from there. Or, "for sale".
Good luck.