SCT Speedometer correction questions
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Tuned
Joined: Oct 2003
Posts: 491
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From: Tampa, FL
SCT Speedometer correction questions
I'm currently running a Predator DiabloSport tuner in my '04 6.0, and have been quite happy with it. However, I just increased my suspension lift and have gone from 35" to 37" tires and am unhappy with the speedometer error factor.
From what I have read, many people here are big fans of this SCT tuner (by the way, is this made by Superchips?). I went to their website and saw that they claim their unit will correct for tire size changes- is this correct? If so, what size tire will it correct up to- enough for my 37" tires? And finally, does this correction also cover the speedometer/odometer, or does it just help the transmission and other speed-influenced systems on the truck?
Thanks for the help. I am a little out of the loop on the newer tuners. Other than being able to adjust for the tires, I would LOVE to hear about any other benefits I might receive from going from Predator to Diablo. Thanks!
From what I have read, many people here are big fans of this SCT tuner (by the way, is this made by Superchips?). I went to their website and saw that they claim their unit will correct for tire size changes- is this correct? If so, what size tire will it correct up to- enough for my 37" tires? And finally, does this correction also cover the speedometer/odometer, or does it just help the transmission and other speed-influenced systems on the truck?
Thanks for the help. I am a little out of the loop on the newer tuners. Other than being able to adjust for the tires, I would LOVE to hear about any other benefits I might receive from going from Predator to Diablo. Thanks!
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
SCT and superchips are NOT the same company. Superchips does NOT have the adjustability the SCT does. I know you can get your tire size corrected at the dealership. I don't know if any of the tuners correct for tire size. I do know that having your PCM/TCM/FICM reading the correct speeds is important on how your vehicle functions and is tuned.
Senior User
Joined: May 2006
Posts: 181
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I'm running a SCT in my 04 6.0 and it did not correct speedo. I provided tire size (35") to Eric when he created programming but speedo is still not calibrated. I just got a small GPS and mounted it to the dash. I still get lost with the GPS but I know how fast I got there.
Jim
Jim
Posting Guru
Joined: Jul 2006
Posts: 1,737
Likes: 0
From: Republic of Texas
Here u go . . .
Originally Posted by Tampa250
I'm currently running a Predator DiabloSport tuner in my '04 6.0, and have been quite happy with it. However, I just increased my suspension lift and have gone from 35" to 37" tires and am unhappy with the speedometer error factor.
From what I have read, many people here are big fans of this SCT tuner (by the way, is this made by Superchips?). I went to their website and saw that they claim their unit will correct for tire size changes- is this correct? If so, what size tire will it correct up to- enough for my 37" tires? And finally, does this correction also cover the speedometer/odometer, or does it just help the transmission and other speed-influenced systems on the truck?
Thanks for the help. I am a little out of the loop on the newer tuners. Other than being able to adjust for the tires, I would LOVE to hear about any other benefits I might receive from going from Predator to Diablo. Thanks!
From what I have read, many people here are big fans of this SCT tuner (by the way, is this made by Superchips?). I went to their website and saw that they claim their unit will correct for tire size changes- is this correct? If so, what size tire will it correct up to- enough for my 37" tires? And finally, does this correction also cover the speedometer/odometer, or does it just help the transmission and other speed-influenced systems on the truck?
Thanks for the help. I am a little out of the loop on the newer tuners. Other than being able to adjust for the tires, I would LOVE to hear about any other benefits I might receive from going from Predator to Diablo. Thanks!
The site for SCT is www/sctflash.com
Thread Starter
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Tuned
Joined: Oct 2003
Posts: 491
Likes: 0
From: Tampa, FL
Thanks, guys.
So, LoneWolf, is the end user (customer) able to access and change the speedometer calibration at home or is this something that a tuner has to do for you?
Thanks!
So, LoneWolf, is the end user (customer) able to access and change the speedometer calibration at home or is this something that a tuner has to do for you?
Thanks!
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Posting Guru
Joined: Jul 2006
Posts: 1,737
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From: Republic of Texas
Here you go . . .
Yes, the end user can do all these things. The SCT Tuner/programmer has to do the EGR valve turn off in all tunes and/or the Turbo/Jake brake feature in the tow tune before they send you the tunes for your handheld programmer.
Hope this helps you.
Hope this helps you.
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Thread Starter
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Tuned
Joined: Oct 2003
Posts: 491
Likes: 0
From: Tampa, FL
Originally Posted by Lonewolftx
Yes, the end user can do all these things. The SCT Tuner/programmer has to do the EGR valve turn off in all tunes and/or the Turbo/Jake brake feature in the tow tune before they send you the tunes for your handheld programmer.
Hope this helps you.
Hope this helps you.
Thanks for all the help!
Cargo Master
Joined: May 2002
Posts: 3,271
Likes: 229
From: Gulf Coast, FL
Any speedo corrections are programmed thru the ABS module.
I don't know of any tuner that changes the speedo. You will need to use an aftermarket box (i.e. Tru-Speed) to make the speedo read correctly.
I don't know of any tuner that changes the speedo. You will need to use an aftermarket box (i.e. Tru-Speed) to make the speedo read correctly.
Lead Driver
Joined: Jun 2007
Posts: 6,757
Likes: 5
From: Corvallis, OR
Lonewolftx is incorrect, none of the tuners I know of, including SCT, can correct the speedo in these trucks. The SCT tuners allow you to change tire revs/mile, but this only affects shift points and does not correct the speedo.
Senior User
Joined: Feb 2006
Posts: 396
Likes: 2
yeah thats what I thought too, but without it written up somewhere so i can point to it and prove it I dont even say what i think is right any more - i was proved wrong once and I got ridiculed for it so now i just act as if i don't know and I ask to make sure.
but on all my experience - same thing i never met a programmer that would make the speedometer read properly.
Good luck to the OP
Kenny
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