Truspeed question
Hotshot
Joined: Dec 2003
Posts: 15,369
Likes: 121
From: Stuttgart, Ar
From Matt@SCT:
The only vehicle that we are able to correct the tire size is for the 6.4 trucks right know. We are working on getting that issue taken care of for the 6.0 trucks, but since the ABS system controls the speedo for that vehicle we need to be able to flash the ABS system as well.
Posting Guru
Joined: Oct 2009
Posts: 2,453
Likes: 4
From: AZ
thats just the xcal ??
just to be perfectly clear about Matt's @ SCT's response ?
I think Matt @ SCT should either have the website fixed or clarify ??
My trucks in the shop today ,,, but I will do a real world test when I get her back ,, I will put imaginary 40's on her
anybody now the approx revs? prob around 400ish ?? guess
thanks for the update
just to be perfectly clear about Matt's @ SCT's response ?
I think Matt @ SCT should either have the website fixed or clarify ??
My trucks in the shop today ,,, but I will do a real world test when I get her back ,, I will put imaginary 40's on her
anybody now the approx revs? prob around 400ish ?? guess
thanks for the update
Hotshot
Joined: Dec 2003
Posts: 15,369
Likes: 121
From: Stuttgart, Ar
What I asked:
Does the Xcal2, Sf3 or XC3 correct the speedometer on ANY of the 6.0L trucks or is it just the 6.4's? I know that on an Xcal2 simply setting the tire rev's per mile won't fix the speedo. Will the 3?
His response in blue:
The only vehicle that we are able to correct the tire size is for the 6.4 trucks right know. We are working on getting that issue taken care of for the 6.0 trucks, but since the ABS system controls the speedo for that vehicle we need to be able to flash the ABS system as well.
I take that to mean that none of their devices will flash an ABS module. That's why it takes something like the Truespeed or a flash device like the hypertech to correct the speedo on a 6.0.
I found some information on the SCT website when I did a tech support section search for speedometer. The only thing that really came up was about the 6.4, but I do agree with you about clarifying the website.
Does the Xcal2, Sf3 or XC3 correct the speedometer on ANY of the 6.0L trucks or is it just the 6.4's? I know that on an Xcal2 simply setting the tire rev's per mile won't fix the speedo. Will the 3?
His response in blue:
The only vehicle that we are able to correct the tire size is for the 6.4 trucks right know. We are working on getting that issue taken care of for the 6.0 trucks, but since the ABS system controls the speedo for that vehicle we need to be able to flash the ABS system as well.
I take that to mean that none of their devices will flash an ABS module. That's why it takes something like the Truespeed or a flash device like the hypertech to correct the speedo on a 6.0.
I found some information on the SCT website when I did a tech support section search for speedometer. The only thing that really came up was about the 6.4, but I do agree with you about clarifying the website.
Mountain Pass
Joined: Jun 2004
Posts: 193
Likes: 1
From: Left Coast
I have had my truspeed installed for 5 years with NO problems. The speedo doesn't jump at all.
The abs module on my '06 is just behind the drivers side battery. Just splice into the correct wire, mount the truspeed unit inside of the cab (velcro under dash) and one +12 volt power when in run wire.
The truspeed has two settings that allow you to switch tire sizes with the flip of a small switch on the unit. Calibration was very easy using a GPS.
The abs module on my '06 is just behind the drivers side battery. Just splice into the correct wire, mount the truspeed unit inside of the cab (velcro under dash) and one +12 volt power when in run wire.
The truspeed has two settings that allow you to switch tire sizes with the flip of a small switch on the unit. Calibration was very easy using a GPS.
Posting Guru
Joined: Oct 2009
Posts: 2,453
Likes: 4
From: AZ
Cargo Master
Joined: Jan 2009
Posts: 2,769
Likes: 8
From: Lubbock
when i had my 04's spedo corrected for the 315/70/r16 bfg kms the closes they could get it was 4~5mph off. he said that with the 3.73 gear ratio he couldnt get it right. if i had the 4.10 or 4.30 he could have done it. i ended up calling a different dealer who had me talk to aone of the techs and he said the same thing. i know the sct x2 will not adjust the spedo for a fact. by radar and gps
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