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Old 05-30-2011, 03:45 PM
Stangshcky12 Stangshcky12 is offline
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I've heard they don't do anything. I definitely wouldn't spend $90 on one.
I was actually just looking at my new Jegs catalog earlier and they have Econo-Aid TB spacers for $30.
The advertised numbers aren't as high but they claim 1-3 mpg and 6-10 ft-lb o torque
Part# for your 4.7 is 331-1011 if you want to check it out
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