I've tested my MPG with and without Performance Shift on and it really is no different. However it is more fun to drive with it on, and it's better on the trans. so I leave it on all the time.
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03-03-2009
I've tested my MPG with and without Performance Shift on and it really is no different. However it is more fun to drive with it on, and it's better on the trans. so I leave it on all the time.
03-05-2009
x2 Here. You can really tell a diff when you go to pass someone and it's not on.Originally Posted by Crave Energy
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