I completely agree with everything you said Pat. However, if efi wasn't better than a carb it wouldn't be taking over the industry...
I'm sure they do make more money off it, but still, it's used in automobiles too. Not trying to start an argument, just pointing something out.
Don't worry, I'm not arguing. Dealt with enough of that on 3ww recently:tdown:.
EFI took over because of emissions and fuel economy. A fuel injected vehicle will run cleaner more consistently because EFI can compensate for elevation, air density, barometric pressure, ambient air temp, intake air temp, etc... That combined with electronically controlled ignition, with a knock sensor, allows the air/fuel mixture to remain a consistent 14.7:1 to allow for the best power results, as well as reduced emissions and fuel economy, over carburetion. EVAP and EGR systems further aid in reducing emissions. Cold starts are not a problem with EFI as well. No pumping the throttle to dump raw fuel into the engine when starting. No using the choke and leaving it on too long. Until the engine reaches operating temp will it burn the air/fuel completely, only then will it produce less emissions.
A carb is simply not going to perform consistently day to day like EFI will. Also, carbs don't like all the emissions control crap that EFI handles. In my opinion, a carb can handle no more then an EVAP line from the fuel tank to the PCV system, to incorporate the EVAP gases from the fuel tank in the air/fuel mixture being burnt, instead of allowing it to vent into the atmosphere. But, emissions equipment was in it's infancy when it debuted during the carbureted era. So, it may actually work half-assed well today, instead of just half-assed, lol:haha:.
I still prefer the simplicity of carbs though. Although EFI isn't all that hard to understand. Carbs just require less to install and run. Fuel pump, check. Fuel pressure regulator (if needed) check. Fuel lines, check. Fuel filter, check. Carb, check. That's just about all that is needed to start and run an engine. Requires much more for any EFI system.
The most simplistic EFI system of all would have to be GM's TBI from 87-95. You can convert any older v8, or 6cy, to TBI with only needing the throttle body, wiring harness, coolant temp sensor, 02 sensor, TPS, IAC, MAP, and ECM. You can cut out everything else from the harness and it literally run only the throttle body. You don't even need the knock sensor, and you can eliminate the electronic spark control. Biggest thing is having the software to "burn" the PROM chips, in some cases. Still tossing around the idea of using TBI on my I6.
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