thefermanator
11-05-2009, 03:59 PM
I need a stock ALLISON 02 OS other than the ones in the tune library. I've ran the 01 and it drives nice except for a harsh 3-4 shift every once in awhile. I put in an 02 from the library and I am having several issues now with my trans that I NEVER had with the 01(clunking in reverse, very harsh 3-2 downshift and harsh downshifts in general, as well as the 4-5 shift table in tow/haul are off). I also prefer the 02 OS as it seems to give me more fuel in 1st gear. With the stock 01 OS I wouldn't get hardly any smoke out of it when I stomp it, with the 02 I can get a good amount out of it. And with the esxception of the harsh downshifts and the reverse issue it drives better in general.
The Neens
11-05-2009, 05:49 PM
This is from a '02 CC Dually...
thefermanator
11-05-2009, 06:09 PM
Thank you. Do you know if this one had overdrive lockout enabled in it?
The Neens
11-05-2009, 08:41 PM
Thank you. Do you know if this one had overdrive lockout enabled in it?
It does not...It's completely stock...
thefermanator
11-05-2009, 10:41 PM
It does not...It's completely stock...
I know that some of the later production 02's came with it enabled and no switch installed. I know this one is the same OS and CAL as my current one that is enabled, I'll find out tommorrow.
The Neens
11-06-2009, 02:42 AM
I know that some of the later production 02's came with it enabled and no switch installed. I know this one is the same OS and CAL as my current one that is enabled, I'll find out tommorrow.
Gotcha, I didn't know that...The truck is CA Emissions, not sure of the build date...
thefermanator
11-11-2009, 06:08 PM
To let you know, that tune does have OD/LO enabled in it. But I'm still having the same issues with some of the shift tables not matching what it's shifting at actually.