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Discussion Starter #1
I swapped out a t56 to a 4r70w in a 2003 Cobra and the speedo is not reading accurate. At 80-90 mph it only shows about 40mph. Any suggestions on how to fix it or recalibrate it?
 

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Discussion Starter #2
Anybody know the 4r70w?

Anybody done this mod and can help me figure this thing out? I was wondering if maybe this problem is a result of different pickup methods(different ways the sensor reads the speed) from the 6 spd to the 4r70w? If it is, do you think maybe Dakota Digitals USI would solve my problems?
 

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Doc
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welcome to the forums..
a tuner would fix your problem.

on a side note .. why did ya toss an Auto ( esp a 4r70w) in an 03?
 

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Discussion Starter #5
This Cobra is built. Dyno proven 500+ Whp and over 700 with the nitrous. An auto tranny should easily improve my quarter mile times. That is, if I can get the thing working! Heh heh. I do have a SCT tuner...haven't tried that yet. Will look into it.
 
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