I have an aftermarket cobalt electronic speedo for my 91 z28. I'm going to remove the ecu because i'm converting to a fast ez fuel setup to control the tpi. I just want to know if there is a way to get the proper vss signal to the speedo once the stock ecu is gone. It is currently running of the buffered signal from the ecu. Is there an aftermarket converter?

 

It depends upon what your spiffy cobalt electric speedometer requires for a signal. A 5-dollar 4-out buffer will provide a 2K or 4K PPM digital signal from the stock VSS. And feed the cruise control. Or can go after market and get a SGI-5 Dakota digital box for a bunch more. Which may or may not work. Which goes back to depending upon what the cobalt speedometer requires for an input signal.

RBob.

 

I know from asking a few folks, that my MAF-ECU can take it's leave and the speedo can work independently. Not sure if that holds true for a SD car.

If you get your EZ-EFI hooked up before I do, lemme know how it goes.