2800 RPM Fuel Drop-Off

[68showngo]

I've heard that there is an issue with the fuel drop-off after 2800 RPMs, but lately I haven't heard much about it.. Is there a fix for this already? Unless I've been looking at things wrong, I've got this problem too. Don't notice much when driving, but can see it when logging. Would like to get it fixed either way. I also heard something about the operating system had something to do with this. Can this simply be re-flashed or is this a more complicated fix yet? Also, where would I get the proper tune file for this?

[2007 5.9]

Beta testers are feverishly working on it....

~Les

[68showngo]

Ok just didn't want to have the issue if there was a fix already.. haven't been able to even go to the track lately anyway so it doesn't make me too big of a difference yet, but would love to fuel to 3400-3500 if there was a benefit and if it was alright on a stock truck.

[GMPX]

One of the beta testers reported back that a new table we added has cured he's fuelling drop off's at about 3,600, he's now seeing good fuel up to 4,200RPM.

[68showngo]

Awesome! Can't wait to try it out

Sent from my DROIDX using Tapatalk

[IdahoRob]

Appears to be an OS issue also. Some do it and some don't with the same tuning in simular set-ups. Only difference is OS that I can see. Continuing testing this week to weed out the problem OS's.

[68showngo]

One more question, can an OS be flashed onto another truck or am I stuck with what I have?

[IdahoRob]

Yes, you can flash in a different OS. Will have to change the vin to correct the anti-theft.

[2007 5.9]

Is the calibration id important??

That OS you posted rob, has a different cal id than my OS...

[GMPX]

Don't take this list as the be all end all, it is taken from a pdf Chrysler/Dodge stopped updating some time ago on the service website.

2006 Models:
35325833 = Auto, Mega Cab, California
35325533 = Auto, California
35325853 = Auto, Mega Cab, Federal
35325553 = Auto, Federal
35325531 = Manual, California
35325551 = Manual, Federal

2007 Models:
45325833 = Auto, Mega Cab, California
45325733 = Auto, California
45325853 = Auto, Mega Cab, Federal
45325753 = Auto, Federal
45325731 = Manual, California
45325751 = Manual, Federal

Where they have the letters is like a revision of the calibration I would guess. Eg, 45325751AG is the calibration after 45325751AF.
These numbers don't appear to have anything to do with the OS number.