SCT optional paramiters?
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Senior User
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From: Roseburg, Or
SCT optional paramiters?
Im messing around with my shift press? By the way does shift press mean how firm the truck will shift? because right now it kinds of jerks when it shifts with AGG. Street. Anyways, it gives shift press 1-2, 2-3, then goes 3-5, 5-6. Why is there no 3-4 4-5??
DB
DB
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Joined: Dec 2003
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From: Arizona
Originally Posted by emmagator
Im messing around with my shift press? By the way does shift press mean how firm the truck will shift? because right now it kinds of jerks when it shifts with AGG. Street. Anyways, it gives shift press 1-2, 2-3, then goes 3-5, 5-6. Why is there no 3-4 4-5??
DB
DB
The Torqueshift is a 6-speed transmission and selects 5-gears to use based on engine & transmissin temperature and load. Normal shift pattern for a warm engine and transmission is 1-2, 2-3, 3-5, 5-6, this is why these are the shift parameters you are allowed to change on the SCT.
With a cold engine and transmission the shift strategy is 1-2, 2-3, 3-4, 4-6
Postmaster
Joined: Mar 2007
Posts: 2,612
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From: Dunwoody, GA
Your transmission feels a bit jerky because it is relearning. Do a series of accellerations from a dead stop at 1/4 throttle, 1/2 throttle, 3/4 throttle and wide open throttle. After 15-20 miles you should be good to go and the jerky part should be a lot more smooth but still have firm shifting. There is a thread on this in the 6.0L Tech Folder.
Posting Guru
Joined: Jul 2007
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From: Las Vega$
yes remember your tranny will go into relearn mode after a flash and shift funny/jerky for a minute. i usually find a nice straight road and do a series of runs up to about 60.
starting off with 1/4 throttle pass, then a half throttle pass, then a full throttle pass like was stated above. i had matt set my shifting rather firm anyway, but my tranny and converter are built to handle it
starting off with 1/4 throttle pass, then a half throttle pass, then a full throttle pass like was stated above. i had matt set my shifting rather firm anyway, but my tranny and converter are built to handle it
Hotshot
Joined: Dec 2003
Posts: 15,369
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From: Stuttgart, Ar
Yes. Every time you reprogram your truck it will go through a relearn. After you reprogram the tranny shift pressures then drive it for 5 cold restarts. I think you'll find it softens up some after reprogramming. Even if you do the tranny relearn procedure in the tech manual it still changes some. You don't want it too soft like stock shifts. Crisp is the best way to describe it. It's better for it to be firm and crisp than mushy (stock) as mushy is what kills your tranny. Some people think the firm/hard shifts are bad when in reality that is what saves your tranny.
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Elder User
Joined: Oct 2006
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From: Everett, PA
Originally Posted by blackhat620
Yes shift pressure is directly related to shift firmness.
The Torqueshift is a 6-speed transmission and selects 5-gears to use based on engine & transmissin temperature and load. Normal shift pattern for a warm engine and transmission is 1-2, 2-3, 3-5, 5-6, this is why these are the shift parameters you are allowed to change on the SCT.
With a cold engine and transmission the shift strategy is 1-2, 2-3, 3-4, 4-6
The Torqueshift is a 6-speed transmission and selects 5-gears to use based on engine & transmissin temperature and load. Normal shift pattern for a warm engine and transmission is 1-2, 2-3, 3-5, 5-6, this is why these are the shift parameters you are allowed to change on the SCT.
With a cold engine and transmission the shift strategy is 1-2, 2-3, 3-4, 4-6
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Postmaster
Joined: Dec 2003
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From: Arizona
Originally Posted by Dustball8504
I always thought it was a 5 speed transmission??
Cold Engine = 1,2,3,4 & 6
Warm Engine = 1,2,3,5 & 6
Gear Ratios"
1st = 3.09
2nd = 2.20
3rd = 1.54
4th = 1.09
5th = 1.00
6th = 0.71
The TorqShift also has the "Tow Haul" mode which alters the shift points & torque converter lockup based on load and driving style.
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