VDH2+TNAA4

[907DAVE]

I am having some issues with the programs provided with the Definition file. All the programs make the truck buck and jerk while cruising/ lightly accelerating at slower speeds. They seem to smooth out after the truck completely warms up. If you accelerate moderately there is no issues, otherwise they work well. Ohh and the "stock" file will not do it.

Anyone experience similar issues?

Thanks

P.S. Another symptom might be some dead spots/ delay in the APP, but hard to tell as I was not driving.

[cleatus12r]

I'll email you a file to try, Dave. I know it works and if it doesn't work on the truck you're speaking of, then there is another problem.

[907DAVE]

Damn.....thanks!

I will give it a shot, still curious what could be causing this.

[907DAVE]

Well truck is still acting up....... even with the file you sent me Cody.

Still bucking at light throttle/ cruise conditions in ALL the programs except stock only when the engine is cold, warm it up a bit and it will completely go away.

Any ideas?

[cleatus12r]

Sounds like some kind of HPO issue to me, Dave.

[907DAVE]

But why does it NOT have any issues in the "stock" file?

The ICP, IPR% in the programs are almost identical to stock in the low rpm/ cruise ranges.