DFI and ECMDiscuss all aspects of DFI (Digital Fuel Injection), ECMs (Electronic Control Module), scanners, and diagnostic equipment. Fine tune your Third Gen computer system for top performance.
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a short question: at the 1227730 ECM with 8D (running a TPI) I usually have the VSS directly connected to the ECM, and the ECM supplies the output signal for the speedo (basically the ECM has the function of former VSS Buffers)
Now i have a 89 Van with mechanical speedo and a speed-sensor attached to the speedo, which supplies a brown speed output wire to this Van's factory TBI-ECM.
Is there a way to use this signal at the TPI-ECM? it would safe me a lot of time because otherwise I would have to get a new VSS.
