Quote:
Originally Posted by Batman
Why not just leave it carb'd. ANY fuel injection is going to be alot of work. Say you go with a TPI you need a TPI set-up for Vortech heads, new wiring harness, New computer since all the TPI cars had a different style then the 84, fuel sender, fuel pump, different fuel lines at the very least in the front. Chances are you will break at least one line and the fuel tank will be rusty on the top so you can replace those etc etc. Your car was designed to run on a carb so I'd keep it that way.
Also TPI is a form of MPFI, don't get it confused with SFI (Sequential fuel injection) like on the newer cars. I also don't know how much you would save fuel wise, definately a little but the TPI fires 4 injectors at a time. I don't think you could switch to EFI properly without dropping at least $2000.00-$3000.00 so just leave it be.
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MPFI is any fuel injection system that uses a fuel injector for each cylinder. TBI is NOT MPFI, for example.
sequential just means that every time the intake valve opens, the injector fires for that cylinder.
batch fire is where the right and left banks fire all at once (first the right side, then the left side or vice versa). the downfall of this is that out of the 4 injectors that fired (assuming this is a V8 motor) only one was fired at an open valve, the other three were fired at the back side of a closed valve.
Not all TPI cars were batch fire, the early ones were, but the later ones werent. I dont know the change over year, but I know SD cars were sequential.
I hope this helps clear things up a little bit.
