I have had the Predator on the 65 HP tune for 450 around town miles....Tons of shifting. I still have de-fueling between shifts......I have read on here that the shifting will return to as smooth as stock after it learns......Well mine is brain dead cuz it dont shift smooth at all.


What should I do?

I think stock actually has "fueling" enabled between shifts which is why its so smooth. defueling makes it last longer, but isn't as smooth. if you want it smooth as stock you might try disabling the defueling..if that is what you are after.

briano...........so how do you disable the defueling?...........Rick

J/A has the option to set defueling but the predator ???

He is running the PREDATOR............65 HP TUNE..........

As far as I know that option is not available...........on a EDGE~Juice/Attitude the feature exists.......

T:cool: NY

Jeff, your location would be a help.

If close to one of our techs, they could put a 'fast learn' on your alli.

Is it all the shifts ? Resetting the Tap Cells may help all or some

I am in Charleston, SC......It is pretty much all shifts and very unpredictable.

Sometimes it shifts just fine and other times in kinda hangs up.

Shifts much better when tranny is cold.

It is an 05 2 WD with 2800 miles on her.

here are some quotes i got from diablosport in reference to the allison-

"...but remember the Duramax with Allison transmission does not tune or adjust the transmission, Allison is a self learn system, if you drive it will improve drivability wise, some truck faster then others, the harder you drive the quicker it learns."

"Your vehicle is equipped with an Allison Transmission. This Transmission has a learning process to compensate for the type of driving the user does. This process is learned by bringing the vehicle up to 55 mph and then put it manually into first gear. The transmission will then automatically down shift itself through all the gears to down to first, and when you stop put it in park and shut the car off. Repeat this process three times. This lets the transmission learn how to deal with the extra power given to it by the predator."

Oh, I didn't realize that the Predator didn't have the option to fuel or defuel shifts, sorry. yes the Edge/*** has this option.

its true the Allison is an adaptive tranny, but it should only take a few hundred shifts to adjust to its driver. This resets when an add on tuner is added or removed, it has to learn all over again.

here are some quotes i got from diablosport in reference to the allison-

"...but remember the Duramax with Allison transmission does not tune or adjust the transmission, Allison is a self learn system, if you drive it will improve drivability wise, some truck faster then others, the harder you drive the quicker it learns."

"Your vehicle is equipped with an Allison Transmission. This Transmission has a learning process to compensate for the type of driving the user does. This process is learned by bringing the vehicle up to 55 mph and then put it manually into first gear. The transmission will then automatically down shift itself through all the gears to down to first, and when you stop put it in park and shut the car off. Repeat this process three times. This lets the transmission learn how to deal with the extra power given to it by the predator."

I have read this and it never sounded right to me. I think I will take the slow way.

yea, it sounded odd to me too. when i get the pred i'll drive like normal and wait for it. i'm not going to throw it in 1st going 55 and slow down on the side of the road, the allison can learn without doing that.

just a suggestion seeing on how he's having troubles......


AND HOLY CRAP WE GOT A BUNCH OF NEW EMOTICONS!!!:uhoh2:

When we fast adp trucks here we do full throttle up-shifts and full throttle down-shifts.
Up-shift: from a dead stop mash her down and let her rip.
Down-shift: once at speed, start stepping on the brakes and slowly let off the throttle. Make the down shift while under power.
This makes the transmission see the absolute worst shift conditions. then drive it normal

NVDiesel

I don't treat my truck like that and I sure as heck don't treat my customers trucks like that. There are more technical ways of doing that; as in scanners.

I have the predator. And diablosport told me to do the 55 mph drop into first. At first i did not do that. But it took it a long time to learn(Slipping) Anyways so i tried it w/ my hand on the selector just incase it did go into 1st. To my suprise it didnot go into first until it slowed down enough to drop in w/out blowing out the tranny. That is a fast learn cuz it didnot give the slipping effect.

I thought we concluded that the pull down to first for fast learn on the Allison was a myth?

I thought we concluded that the pull down to first for fast learn on the Allison was a myth?



Yup but a lot us did it :o: :confuzeld :o:

Just installed predator on 65hp, shifting was poor so;


Actually I saw it on the Diablo Sport Website. The advise is as follows:

Now there is also kind of a trick you can play on the system that helps speed up the process. Take the truck out on an open piece of road, allow it to shift all the way up to high gear at cruise, then release the throttle and shift the truck down into low gear, not to worry it will not jerk down into low gear, foot off the throttle allow the vehicle to shift down through the gear progression until your riding along in low, apply brake, put the truck in Park, and do it again.
After two or three times, generally, you will see improvements right away, Allison has learned.

It was written by:

Nick Spinelli
DiabloSport Sales Manager

WORKS LIKE A CHAMP, THIS IS A GOOD PROCEDURE!!!!.....Rick
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If all you had was a piss poor 65 hp program and you had to go through all that; what would you have to do with a big hp program? Maybe push the truck off a cliff to teach the Ally.:help:

I wonder what will happen if you use the T/H button and let it shift just a bit? BTW, the "cold" shifts are in the morning or ........

Actually, the procedure helps, but its still not as great as stock shifting. I wish diablo could come up with a little better shift program. Maybe a revision change in the future will address this. I still like the tuner and would'nt own any other............my .02............Rick

I wonder what will happen if you use the T/H button and let it shift just a bit? BTW, the "cold" shifts are in the morning or ........
It will start adapting for t/h and not do much good for o/d driving. I like to break them in o/d first and let t/h fall in to place shortly after that.
mike

NVDiesel

I don't treat my truck like that and I sure as heck don't treat my customers trucks like that. There are more technical ways of doing that; as in scanners.Mike it's not as rough on them as it may have sounded. I do use the Allison DOC program (Laptop) to reset fast adaptive shifts, then I drive them in. The idea here is the the most extream settings are set in to the transmissions programing. from that point the transmission is driven in and set by the customer.
I have used this method on many trucks, had no problems and no complaints from customers on shift or performance. Also customers have ridden with me while I drive them in and none have been upset.
My personal Truck is a 2001 Duramax CC SB AFE Stage II, Banks Stinger System, Burned to 98hp with a stacked 90hp Edge. the edge is set to 90hp while in towhaul and off while not in T/H. I run Transynd Fluid with no mods to the transmission and have not had any trouble at all.

Now I am really scratching my head.

65hp tune shifting never really smoothed (big de-fueling between shifts).
Bumped her up to the 85 hp setting and shifts like butter.
What is the deal-e-o?




I am running a stock exaust....I am worried about the EGT running this tune all day long.

Here is my experience. I think it is a very simple solution.

Reset your tranny using a diagnostics scanner or Quad tuner. This will clear out any junk.

Pick one power level and do not change it. Drive for a few days normaly. It will adapt and you will be happy.

been running the 65hp tune for a couple weeks.....600 or so miles of stop and go.........tranny did not adapt

I'm not sure about you guys, maybe it is true that some trucks adapt better than others, but... For about two months I was running my truck with the Juice/Attitude on level 1, in the last two days I have been running it on level 4 (which is a 75HP difference) and my tranny is shifting just find. It is firm, yet smooth as butter. I haven't really driven that much either.

Dan

I'd listen to Mike L., a pro that knows tranny's like he does is hard to find.

Here is my experience. I think it is a very simple solution.

Reset your tranny using a diagnostics scanner or Quad tuner. This will clear out any junk.

Pick one power level and do not change it. Drive for a few days normaly. It will adapt and you will be happy.
No it will not.( clear junk)
First of all, when you added the tuner you put the junk there and it's not going to go away. The Allison will change its shifting and pressures to the kind of driving you happen to be doing at the present time. You don't notice this too much when it is stock and unmodifyed. You notice mushy shifts and lack of response, but generaly it is smooth. Now you add a tuner ( remember all tuners are trying to help the trans, but it does not happen with the Ally).So, you don't know what they did(they won't say cause it isn't right) Then you do a trans upgrade. Well, we have no idea what the engine program is, not that it matters because we have not gotten this trans stuff perfected. What we have done is made the Ally stronger and able to withstand a lot of power without failing in most cases. At this time , this does not come without funny shifting , jerks, sometimes hard downshifts. This is where we are at this stage of the game transmission wise. You can do your relearning with a scanner, take the truck to 100mph and drop it to low, and it will not stop weird things from happening. Learn to love it. We will learn more and it will get better soon.
mike

From my personal experience with the Predator mine adapted over a few days. I had very little tranny adapting with the edge and I varied the power levels all over the place. I'm running the Pred on 40hp and the ally seemed like it was a slow learner compared to the edge adapting (I had the edge on 0 while the ally learned). Now it shifts like stock. Since the ally adapted to the Pred. I bumped up the edge to level 1 and no problem with the tranny having to adapt. I didn't do anything except drive it while it was learning the pred. tune.http://www.dieselplace.com/forum/images/smilies/driver.gif

i have found to help speed up the process give it about 100 ish miles of casual driving, the higher rpm shifts will still be crappy still..... but drive it hard through all the rpms for about 20 miles and the shifting will be like stock for all rpms, otherwise it doesnt really learn the 2k plus shifting for some reason (in any reasonable ammount of time)

No it will not.( clear junk)
mike

Is there no reason or benifit to clear/reset the tap cells?