I just got 35"s on my SD and I was going to use the SCT to recalibrate the speedo. Then I searched the forums on here and noticed most people said it won't fix the speedo. I just want someone to clear that up for me. What are some other options for fixing the speedo?
I had a sct.I personaly would go with a tru-speed or a re-speed.I still have the re-speed because its an individual electronic device that plays the part ''before'' the pcm.That way its doesn't have a chance to interfere with any thing you might be down loading onto the pcm or modifying later.
what do you mean? the sct re-calibrates the speedo for the 6 liter trucks... it is under options just change the tires revolutions per mile to match what your tires are.
Hey there is a bunch of stuff buried in there that isn't easy to see your first time out....
When you go into your custom tune choose to "adjust options" and lookup your tire size to see how many revolutions per mile they are and choose the closest to it (I think it goes in increments of 5) then shoot the program to the truck and you are done.
Hmmmm..... I have gotten word that this may not work after all...... I am sorry for giving false information. The SCT flashes both the PCM and TCM (transmission controller). I swear I have corrected trucks' speedos with the x3.....
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