This is a valid point, a lot of people do make mistakes with EFI because they make assumptions or don't research properly before they get hands on with the laptop. This is a very optimistic approach.
But bad tuning isn't really the fault of the system.
EFI is more complex than carburettors, but the upside is it has capabilities far beyond that of a carburetor as long as the tuner is on top of his game.
You may see a lot of EFI cars **** the bed. But with EFI There are specific active systems that can be implemented to avoid having your engine **** the bed
Even though these systems are usually routine for professionals, unfortunately very few amateurs or DIY guys take the time to set these systems up correctly because they consider them unnecessary.
If your wideband O2 sensor detects an unexpected lean condition it can dial back ignition timing in milliseconds. The same can be done with thermocouples to keep an eye on EGT.
With the addition of a fly by wire throttle body you can even set it up your desired parameters for cutting any combination of air, fuel and spark to any degree you choose
A coolant pressure sensor can immediately detect a spike in coolant pressure caused by a head gasket failure. Or a lack of pressure caused by a water pump failure which limits circulation.
Same goes for your trans fluid.
The cooling systems can also have fans dialed to run your trans fluid or engine coolant within a narrow temperature range for optimum performance and reliability.
If any of these go beyond normal operating range, you can catch the problem and fix it *before* your engine/trans lunches itself.
There's just so many things you can do with EFI that can make your parts survive when something small inevitably goes wrong.
Carbs are great at what they do, but there is a whole world of things they don't do at all.
