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Old 04-14-2023, 04:07 PM
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lrust lrust is offline
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Join Date: Jan 2004
Location: Easley, SC
Posts: 89
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I have used AutoInstruments for two factory tach upgrades for use with HEI, etc. https://www.autoinstruments.com/. Had an issue with one and they took care of it immediately no questions asked.