Hey SC III guys......... [Archive] - Diesel Place : Chevrolet and GMC Diesel Truck Forums

: Hey SC III guys.........


05LLY2500HD
06-06-2005, 11:09 PM
I didn't really know what to expect as far as the "feel" of shifts, when I got my SC III. What are your guys experiences with the SC III. I know lots of you have a IV or V, or ATS or DTT. But I'm looking paticularly for SC III.
Tranny shift funky when it's cold? Sometimes jerky when TC locks up, especially in 5th. Please reply, thanks.

05LLY2500HD
06-06-2005, 11:13 PM
Could what I'm expeirincing be due to the program(s) I'm running.(if it's not normal)??

Mike L.
06-06-2005, 11:15 PM
I have not has any problems with SC3s.

GMC-2002-Dmax
06-06-2005, 11:21 PM
I have not has any problems with SC3s.

Mine has been fine...........depending on your POWER Setting..........if you set the Juice to one level and leave it alone the tranny works great, if you start changing levels than it will act up........they have adaptive learning.......did you reset the TAP CELLS when the install was done ???????

Sounds like it might still be learning,

T;) NY

05LLY2500HD
06-06-2005, 11:22 PM
But would you say these are "problems"?

dmaxalliTech
06-06-2005, 11:24 PM
Jeromy, if your changing levels around on it, (power) it will act funky on you.

GMC-2002-Dmax
06-06-2005, 11:26 PM
Mine will shift a little firmer when cold............it can get jerky in T/H mode while in town driving.........with a big tune like the Xtreme........but nothing problematic........

Nothing really out of normal for my tastes..........it seems to shift consistant as long as I drive it the same power level every day........
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05LLY2500HD
06-06-2005, 11:26 PM
That is how I felt, like it's still learning.But I've had it for about 9k miles now. I usually leave power in one spot. Tap cells? I dunno, I'm sure they were. But sometimes from 2-3 especially and 4-5 sometimes and REALLY when the TC locks up in 5th, it feels like someone bumped me from behind, it really jerks into gear.Mine has been fine...........depending on your POWER Setting..........if you set the Juice to one level and leave it alone the tranny works great, if you start changing levels than it will act up........they have adaptive learning.......did you reset the TAP CELLS when the install was done ???????

Sounds like it might still be learning,

T;) NY

GMC-2002-Dmax
06-06-2005, 11:29 PM
That would be the TRIPLE TC locking in............my 1-2 shift and then the 2nd gear TC lock-up feels like an extra shift.......the same as the 5th gear TC lock-up.........no mistake when that Triple TC locks in.......

I think your fine........just drive it like you just stole it...............:eek:
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05LLY2500HD
06-06-2005, 11:34 PM
I normally don't change them, when I do it's maybe once or twice a month? How soon will the tranny learn if I leave it at one power setting?Jeromy, if your changing levels around on it, (power) it will act funky on you.

05LLY2500HD
06-06-2005, 11:38 PM
:D ................I like the quote from "Tombstone"?!That would be the TRIPLE TC locking in............my 1-2 shift and then the 2nd gear TC lock-up feels like an extra shift.......the same as the 5th gear TC lock-up.........no mistake when that Triple TC locks in.......

I think your fine........just drive it like you just stole it...............:eek:
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GMC-2002-Dmax
06-06-2005, 11:38 PM
That depends on how you drive..........I drive my truck hard, really hard daily..........when I swapped tune from stock to the Xtreme after the winter it probably took a week to learn.........I should have reset the taps but did not........so I lived with flared shift until the trany learned.......now it has learned it's fine.......

Every transmission is different.........some say a consecutive bunch of runs from stop thru the 5 gears at 1/2 throttle - 3/4 throttle and then full throttle will help........

Just drive it...........but 9000 miles seems like it should have learned by now........


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Max Power
06-06-2005, 11:41 PM
It's really too bad we can't shut off adaptive learning and upload our own parameters instead. Then we'd have something!

05LLY2500HD
06-06-2005, 11:57 PM
That's the other thing a LOT of the shifts seem to "flare"

05LLY2500HD
06-07-2005, 12:06 AM
What I'd like to do is have someone close here ride or drive and see if it feels normal to them, I could be overreacting, I do that when I spend lots of money on something, especially my truck. Just wanna make sure everything is fine. Anyone live around here??? Wanna ride?

goodrnch
06-07-2005, 12:53 AM
It would also be nice if we could turn off the defuel as well as the adaptive learn so we can just get a nice quick, firm shift each and every time. My stage 3 is well behaved about 70 % of the time, but the other 30%, I am thinking that a ghost has climbed into the tcm and is having all kinds of fun at my expense. Just as I think that the trans has finally decided to be consistant, I get this big slip and flare as I'm going through the gears and I just sit there thinking that I just wasted a lot of money on a spendy trans job that really didnt need to be done at 9k on a new 05 truck. But on those days that it works like I think it should, I think life is good. One question that I have, is, will the copilot control it enough to make it feel the same all the time????? I do like the feel of that triple disk when it locks up.

GMC-2002-Dmax
06-07-2005, 12:56 AM
It would also be nice if we could turn off the defuel as well as the adaptive learn so we can just get a nice quick, firm shift each and every time. My stage 3 is well behaved about 70 % of the time, but the other 30%, I am thinking that a ghost has climbed into the tcm and is having all kinds of fun at my expense. Just as I think that the trans has finally decided to be consistant, I get this big slip and flare as I'm going through the gears and I just sit there thinking that I just wasted a lot of money on a spendy trans job that really didnt need to be done at 9k on a new 05 truck. But on those days that it works like I think it should, I think life is good.

One question that I have, is, will the copilot control it enough to make it feel the same all the time?????

I do like the feel of that triple disk when it locks up.

I'll let you know when I install mine this week..........;)
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Forest Lake LLY
06-07-2005, 09:20 AM
I've had my SCIII in for about 2 weeks now. I have the same issue as you. It was really hard into 5th gear at first, but seems to be learning. Of course, playing around with the Predator and Edge settings doesn't help the learning curve. It still goes in hard occasionally. I have to wonder if it occurs if/when it shifts into 5th and goes into lock up at the same time? Seems to me that it is really noticeable if I am accellerating hard and let up on the throttle about the time it's going into 5th.

DSTRBD
06-07-2005, 10:55 AM
When I first got the SC III I liked it as it was a huge improvement over stock. Now, I cant stand the way it shifts. Actually, the only shifts I like are when its REAL cold. Nice, quick, firm shifts. Warms up, goes to hell. Matter of opinion I guess.

Max Power
06-07-2005, 11:05 AM
Are you guys all running the Juice/Attitude?

My biggest complaint with the Juice is that doesnt' give any power until it is up to 160 degrees. My drive to work is short so it never gets up to 160 degrees daily. This means it goes through probably 5 upshifts and down shifts a day at lower power. I think this is 90% of my shifting problems on my truck.

I am planning on upgrading to a Suncoast L3 or L4 here very shortly and I expect to have the same problems. I think once I get it upgraded I will run the Predator at 100hp and leave it there. I can't stand shift flares.

It would be nice if there was a way to trick the edge into thinking the truck was warm.

IdahoRob
06-07-2005, 11:18 AM
I'm running just the transgo and converter and I'm experiencing some of the same things, just not as bad. Sounds like it might be the transgo in the SCIII kits that is the common denonator. I'm running the predator on 100 w/pane all the time. I don't have shift flares, but do have soft shifts and random defueling at times when I'd like it to rock. I'm looking hard at the co-pilot also. GM-2002-Dmax, please let us know how it works. At least I won't have to yank that whore back out to install the co-pilot.

Rob

Mackin
06-07-2005, 11:46 AM
Interesting ;)

"if" it is JUST adaptive learn what would you think constant driving with the Co-Pilot ONLY would matter? Or is your attempt to only temporaily sub-side the flare in gear exchange?

There's more to it IMO! ;)

I can tell you I haven't had a flared shift yet.Perhaps premature?Have many shifts computed already trust me.

I use the Co-pilot only when I want to get on'er good.

Forest Lake LLY
06-07-2005, 11:56 AM
Max Power, I am running the same as 05LLY2500HD. Predator on level 1 and edge on 5 x 5. It doesn't matter if I run just the edge or edge with the predator. I set the attitude to defuel 4 and 5 shift to see if the problem would do away. Maybe a slight decrease.

IdahoRob
06-07-2005, 11:59 AM
I would guess if you used the co-pilot for everyday driving the tcm would adapt to it also. I'm surely no tranny guy though. I'd only use it at the strip or for a serious challenge.

Rob

bigd
06-07-2005, 12:04 PM
what i have been told is if you leave the co-pilot on all the time the tcm will try to adapt to it, so its best to leave it off till you need it. the tcm will try and adapt to your driving habits, power level, etc. no matter whos kit is in it, so its best to not change your tunes all the time, and stay consistant with your driving, i only had flares when going from small or no tunes to big tunes or when i drove mildly for a long time.

coyotekid
06-07-2005, 12:10 PM
I'm very happy with my Suncoast III, it's the Allison TCM that pisses me off sometimes.

I don't switch power levels a whole lot, but I do drive differently according to what I'm doing. The Alli needs to be desensitized in my opinion.

I drive like a Grandma until my truck is warmed up, so the first few shifts of the day are generally crappy.

I don't think it's anything to worry about, but it does take something away... The Predator programming is also a likely culprit, as its programming just isn't as refined as some of the other tunes out there. I'm hoping the TTS LLY programming will solve some of the complaints...

Blinky
06-07-2005, 12:32 PM
Mine will shift a little firmer when cold............it can get jerky in T/H mode while in town driving.........with a big tune like the Xtreme........but nothing problematic........

Nothing really out of normal for my tastes..........it seems to shift consistant as long as I drive it the same power level every day........
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:exactly:

Shifts very firm in the morning before the Juice kicks in.....

Switching power levels causes some odd shifts....

Other than that, absolutely no complaints.

NWDmax
06-07-2005, 03:11 PM
:exactly:

Shifts very firm in the morning before the Juice kicks in.....

Switching power levels causes some odd shifts....

Other than that, absolutely no complaints.

Blinky, I see the exact same thing every morning or after the truck has been sitting for awhile.
I love the first few hard shifts I get then!:ro)

Blinky
06-07-2005, 03:59 PM
Blinky, I see the exact same thing every morning or after the truck has been sitting for awhile.
I love the first few hard shifts I get then!:ro)

Yup..... gottta be careful with the coffee for the first few miles......

I wasn't paying attention and almost wore some this morning:eek:

NWDmax
06-07-2005, 05:43 PM
Drink,shift,drink,shift,drink,shift. Gotta get the rhythm right I know!!!:exactly: