1.22 release vs 1.22 R&D

[gahanna-6.4]

The release tune seems to have lost alot of mid and top end power and moved it down low. Did they just move the whole power band down to the bottom? The R&D tune is on *fire* from off-idle and pulls hard thru 3500rpm. So I'm headed back to the R&D Tune for now.

[George C]

I'm a little confused on what you are saying.
Did you gain or lose bottom on the revised tune?
I finally had some time to drive the revision last night, and I thought it seemed like it lost a lot down low on my truck..
The R&D file is also bigger, so something was removed... 564mb R&D compared to 532mb on the revision.
I just flashed back to it myself...

[gahanna-6.4]

Yup, just reflashed back to stock then back to 1.22 R&D and Im happy again. I spent quite a bit of time with both tunes and the R&D tune is staying on mine.

I lost mid and upper power. Low end power seemed to be about the same as the R&D. The engine 'runs-on' for about a 1/4 second after lifting the throttle with the R&D tune which is weird to get used to, but its manageable.

[powerstroker67]

Does your R+D tune have a _4 after the 1.22?

[gahanna-6.4]

Originally Posted by powerstroker67

Does your R+D tune have a _4 after the 1.22?

My R&D filename: LW64TR122OR_Protected.LFU
My R&D filename on the livewire display: 6.4 1.2.2B

[George C]

Originally Posted by gahanna-6.4

My R&D filename: LW64TR122OR_Protected.LFU
My R&D filename on the livewire display: 6.4 1.2.2B

The "protected" LFU. file is the SCT general release.
The LFU file that doesn't have the word "protected" is the R&D

JMHO here.
I see it slightly different on my truck.
The low end throttle response really suffered on the protected file, slightly sluggish to sometimes really sluggish.
Low end is red hot on the R&D. Touch it and your head snaps back. I'm also noticing more smoke and EGT on the R&D also..
The Protected file does deal with the throttle lift better, but it's not nearly worth sacrificing any of my low end response to get a better lift IMO.
Like you, I feel it's it's manageable.

[elea247]

I'm glad im not the only one who is noticing the difference

[gahanna-6.4]

Original 1.20 Release file:
05/01/2008 09:42 AM 583,374 LW64TR120OR_protected.LFU

Original 1.22 Release file:
08/01/2008 05:57 PM 545,736 LW64TR122OR_protected.LFU

Beta 1.22 file:
07/21/2008 07:26 PM 577,986 LW64TR122OR_Protected.LFU

[OneStockQuik6.0]

Is there a difference between these two,If so what is it?
Original 1.22 Release file:
08/01/2008 05:57 PM 545,736 LW64TR122OR_protected.LFU

Beta 1.22 file:
07/21/2008 07:26 PM 577,986 LW64TR122OR_Protected.LFU

[powerstroker67]

All the offroad DPF deletes say "protected" and trust me I have a bunch since 1.18(the first DPF off version). The best running one seems to be LW64TR122_4OR_Protected.LFU, this one also fixed so calibration coverage/support issues.