MSD Three Stage Retard Control - Adjustable 10000404 Direct bolt-in to 302-1 Holley

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MSD Three Stage Retard Control - Adjustable 10000404 Direct bolt-in to 302-1 HolleyThe Three Stage Retard Control allows you to retard your ignition timing in three different stages. You can activate one retard for a nitrous stage and another at top end in high gear for more mph and still have another module left over for dual stage nitrous systems. When activated together, the retard amounts are cumulative so you get the total of the three. For example, if you pull 2, then 4 on the second stage and another 2 at top end, the total