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Old 11-22-2008, 02:35 PM   #44 (permalink)
whatjigg
EcoModding Lurker
 
Join Date: Nov 2008
Location: Ottawa
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You notice any fuel economy changes? I too am doubtful of what 'they' say. I mean, a tire at 32 psi of air/nitrogen is still going to be 32psi. And yes I just meant compressed air not pure O2 which nullifies some of the comparison.
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