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2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.


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  #1  
Old Fri, June 1st, 2012, 08:47 PM
TxCustoms89 TxCustoms89 is offline
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Default Custom Tune Options

I was wondering if the more experienced could help answer a question....i have a custom tune on a sct and my speedometer is off..will it hurt to change the size and or the shift firmness or should i leave these alone?
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Old Fri, June 1st, 2012, 09:26 PM
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ticopowell ticopowell is offline
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to fix the speedometer you don't need to do anything with shift firmness. changing the size of your tire will fix the speedo issue. if you think your shifts are hard or soft then you can change the firmness, but do it in little increments, no more than + - 1 at a time.
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Old Sat, June 2nd, 2012, 11:40 PM
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Longshot270 Longshot270 is offline
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Quote:
Originally Posted by ticopowell View Post
to fix the speedometer you don't need to do anything with shift firmness. changing the size of your tire will fix the speedo issue. if you think your shifts are hard or soft then you can change the firmness, but do it in little increments, no more than + - 1 at a time.
I agree
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