Hey guys,
I have had the same problem with my 06 for a while and can't get it figured out. If I run the truck up to 103 it feels like it defuels and just plain runs out of power. (Now I don't run at 103 alot but once in a while I will get a wild hair and want to show a friend what the back of my dually looks like). Anyway after it defuels it losses it's power. Even after I slow down it just has no power. It feels like it's stock. Almost no smoke and way lower power. I can drive 100 miles and the power doesn't come back. If I shut the truck off the power is back. Runs great but if I run her up to 103 she shuts down and stays that way untill I shut the truck back off. Any of you guys ever experience this before?
Thanks,
Topper

 

You change the speed limiter With the Smarty?

 

No I didn't. I don't think I can with my Smart. It may be to old. I don't know why that would help though.
Topper

 

You need to update it with the newest software and that will allow you to adjust your speed limiter up to 250mph

 

Yea I have a newer version on my wife's 05 that I can adjust the speed limiter But what will that do? If it hits the defuel will it stay in the defuel mode untill I turn the truck off?
Thanks,
Topper

 

I would unload yours on the 06 and load your wifes Smarty then adjust speedometer.

 

Hey guys,
I'm going to do that today Howling. Hope it helps. Not convinced that it will but I'll give it a try. I'll keep ya posted.
Topper