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Maintenance / Tachometer
« on: December 19, 2009, 04:30:17 AM »
My factory in-dash tachometer reads 200 rpm higher at idle and almost 400rpm higher at freeway speeds. Since you guys have helped solve all my other problems,I thought I would throw this one your way. By the way, I have a GM HEI distributor. a friend told me this may be the problem and I need to install a "electronic signal filter" ??