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We're well aware that the majority of gas-saving gadgets are a bunch of worthless gimmicks, but one particular piece of hardware can help you save gas, and it does so by making you aware. The ScanGauge II connects directly to the On Board Diagnostics System (OBDII) port, which exists on nearly all post-1996 vehicles. It has an LCD readout that can notify you of stored trouble codes, but probably the most important feature in today's day and age is the instantaneous fuel economy readout. More »
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