LS Impala SS with Tach and Speedo Problems
08-28-2011, 05:59 PM
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LS Impala SS with Tach and Speedo Problems Basically I have an impala with an LS motor from a Pontiac GTO, the gto computer is the only one wired to the car. By the time I actually get to about 80 mph, the speedo reads 160+ mph. The tach doesn't even work. How can this be fixed or should I just run aftermarket gauges? Need help
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08-28-2011, 07:56 PM
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i wired a 95 impala ss and all factory gauge work, if its wired right you can change tach output signal with hp tuners to work with lt1 tach, if your speedometer is wired from computer output to speedometer it can be calibrated as well.
08-28-2011, 08:03 PM
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Did you wire it up with the LS engine computer or the lt1 computer?
