Well as some of you have read I had new tires and wheels and a programmer installed sat. Ok here we go.

1) If I use the premium fuel mode on take off is great until you hit between 3,000 and 4,000 rpm's the motor sounds like it is starying for fuel or air or even the timing dosen't adjust sounded terrible, then after 4,000 it accelerates normal again.
2) Put it in regular fuel mode and it's fine.
the other mode is stock. Haven't really messed with it much since this weekend damb work lol. and plus when I was driving tring to hear the motor the wind had to be blowing 15 mph so wind noise was also a factor.
Might give a call to pro comp and see if anyone else has had a issue like this.

 

i wasnt aware that a programmer had been released, if its not running right it should be removed until the manufacturer can be contacted. It will void your warranty if you destroy something on your truck

 

ya i went back to the regular gas setting and no issues. It's only the premium setting. But yes will be contacting pro comp (hyper tech) and ask some questions.

 

Interested to see how this pans out.......