The 475hp Firebird engine swap (Finally!!)  
The DFI computer has no vss conditioning system as the stock LT1 PCM does, so I scored this stand alone VSS signal buffer off a 1991 S-10. It converts the AC sine wave from the VSS sensor into an open collector active low output of whatever ratio it is jumpered for on the PCB.

The DFI computer has no vss conditioning system as the stock LT1 PCM does, so I scored this stand alone VSS signal buffer off a 1991 S-10. It converts the AC sine wave from the VSS sensor into an open collector active low output of whatever ratio it is jumpered for on the PCB.


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