Thread: 428 started acting up - exhaust backfire intermittently and rough idle
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Old 07-09-2020, 03:54 PM
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Formulabruce Formulabruce is offline
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Join Date: Nov 2004
Location: North East of AMES PERFORMANCE, in the "SHIRE"
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Your MSD box potted? Have seen them partial fail, and complete fail due to no air cooling it. (Potted electronics suck) . At least one each year fails on the hot rod power tour because it gets too "Hot" .

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