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Re: P0420 and fuel economy: Huh?
Posted to Technical Theory Forum on 5/30/2011 10 Replies

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Andrew, surely you have seen the effects of changing the rim/tire diameter on speedometers, haven't you. Especially when people put large tires on trucks. Reading on to the disagreement Scott and i a... Login to read more.

10 Replies Received (View Replies)