Setup Tutorial Instruction Manual

GEN3 ECU - Ignition Settings for GM Cam Sync Drive

When using the GM Cam Sync drive and a BigStuff3 24 tooth wheel, the Factory or Dealer Ignition

Configuration, must be as follows:

• Ignition Type:

COP

• Ignition Drive:

Inductive: FYI - when COP is selected for Ignition Type, the Ignition

Drive is also automatically selected.

• Crank Input Select: IPU (when using MSD 8505, two (2) wire IPU sensor)

• Cam Input Select:

HED

• Crank Edge:

Rising – since all IPU sensors are rising edge

• Cam Edge: Falling for this distributor

• CAM HED Pullup: 12V

• Crank HED Pullup

: None, since an IPU sensor is being used