Digital dash with aftermarket EFI
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Digital dash with aftermarket EFI
Sorry, I searched but couldn’t find what I needed. If I were to switch to an auto tuning EFI system can I keep my digital dash functional? 87 383cu in
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Re: Digital dash with aftermarket EFI
Your need to ask the supplier of the auto-tuning ECM if this can be done. As for your post here, you didn't even mention who they are. Let along whether anyone here would even know.
RBob.
RBob.
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Re: Digital dash with aftermarket EFI
I don't understand why people think the ECM is so involved with the functions of the dash. The oil pressure and engine temp are from sensors that can be transferred from your existing engine, or perhaps they don't change at all. Speedometer in these cars is direct to the transmission, there is no ECM interface. That only leaves the tach, I can't imagine ANY engine control isn't going to have a tach output, or you can hook to the negative side of coil 1 to pick up a tach signal if it is C.O.P.
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Re: Digital dash with aftermarket EFI
I don't understand why people think the ECM is so involved with the functions of the dash. The oil pressure and engine temp are from sensors that can be transferred from your existing engine, or perhaps they don't change at all. Speedometer in these cars is direct to the transmission, there is no ECM interface. That only leaves the tach, I can't imagine ANY engine control isn't going to have a tach output, or you can hook to the negative side of coil 1 to pick up a tach signal if it is C.O.P.
Best bet is to refer to your trusty Helm epic novella about the young boy named El Servico Manuel. And find the diagram for your car/engine, and see.
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Re: Digital dash with aftermarket EFI
I don't understand why people think the ECM is so involved with the functions of the dash. The oil pressure and engine temp are from sensors that can be transferred from your existing engine, or perhaps they don't change at all. Speedometer in these cars is direct to the transmission, there is no ECM interface. That only leaves the tach, I can't imagine ANY engine control isn't going to have a tach output, or you can hook to the negative side of coil 1 to pick up a tach signal if it is C.O.P.
But yes, I agree that in our cars, the ECM has nothing to do with the dash for the most part. In my GTA the speedo is driven by the LT1 PCM, though I need a SGI-5, its off by a few MPH since 93 T56 had a funky signal compared to 94+
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Re: Digital dash with aftermarket EFI
Thanks all for the quick responses.. RBob, I didn't think the manufacture I was looking at was relevant, which is why I didn't mention.
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Re: Digital dash with aftermarket EFI
I intentionally left all that out, if they don't know how the speedo works, then they aren't going to know about the buffer or drive cable or not.
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