sohfast94 wrote:What revision is this? when you power it up it will be in the top right...

v.7r19...just got off the phone with the tech....he wants me to send in the tool.....

Excursionist wrote:I towed about 8000 lbs with the 60 hp tune with no problem. Do you have an EGT guage?

i do not have the EGT guage....i wanted to tune to the 60hp but it will not let me , i guess i will have to stay at 85 hp, until i get a reply from DS or a forum reply to help....

What exactly is the programmer doing ,that it will not "take the tune"?Are you able to power the programmer up ?
It goes thru all the steps and when it tells me to turn the ignition to the on position without starting the engine, it says that the tune has failed....and yes..i am able to power the ...

I have a 2000 7.3 PSD, its been tuned to the 85HP for a couple years and i want to tune to the 40HP tow and it will not take the tune...any ideas???
What is the best tune for towing a 4500lb trailer 600 miles,for power and mileage??