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To control the timing, we used MSD's LS1/LS6 controller. Unlike some of the conventional plug-in types that utilize a preprogrammed chip, the MSD unit allows you to have complete control to progressively ramp in timing at any given rpm. If you haven't used one, it's a must-have. As a reminder, the LS2 utilizes a 5-volt cam sensor, whereas the controller was designed for the older LS engines with a 12-volt sensor; in order for the controller to function properly, reverse the two outer wires to change the polarity and you're good to go.