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2.5 TBI swap to mpi


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So I know its been done before. I have the 86 tbi, will I need the later flywheel? I know I need intake, wire harness, speedo?

 

Yes you will need the later flywheel. I believe you will also need a new fuel pump -- I think the operating pressures are quite different.

 

Why would you need to change the speedometer? Yours is mechanicsal and it's driven by the transfer case -- it has nothing to do with the injection.

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It was easier for me to use the MPI speedo since its plug and play with the MPI harness.

 

however if you want to use your old speedometer you need a pass through speed sensor so you can have the speed sensor signal for the computer but still have provisions for the cable operated speedometer.

 

There is a bit of info on the swap in my build thread.

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