I read where you sent your chip back to get it fixed, if for any reason you may want to try a different program, i would suggest a call to DP tuner
DP Tuner has a great track record and for my 2 cents Jody Tipton is one of the best.
I have a 40 hp towing tune on my 1999 f 250 7.3, it is night and day difference when towing, it shifts better, runs better, EGT stay under control and are manageable and it has been flawless for about 12 years.
I mostly tow with my f250 and have towed all over california and the rest of the western us, never lacked for power
I only mention it in case you might want to try something else.