Modified GM VSSB – To Adjust for Different Tires / Gear Ratios – TBI


In stock (can be backordered)

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These VSSBs have been modified with 6 pin DIP switches to enable calibration for different tire sizes and gear ratios.  This style works with ’87-95 style ECMs like the 1227747 and 16197427, instructions are included.  They work great with our TBI harnesses that have 700R4/ 4L60E/ 4L80E transmission control.  If your setup has the DRAC built into the gauge cluster, this probably isn’t a good replacement.