[Christ]

Originally Posted by mwebb

for best performance
and / OR
best fuel economy

the injectors must have about exactly the same flow relative to each other under the same conditions
if not
you will have some cylinders that are lean and some that are rich and
none that are operating at peak efficiency .

system mixture will be at stoich BUT individual cylinders can be way off stoich
because Mr 02 sensor does not see mixture per cylinder , but sees system mixture
when all injectors have the same exact flow , all cylinders will operate at as close to peak efficiency as is possible .

which is why you should never replace 1 injector OR mix and match injectors from various systems .
it is never ok to do that .

Apparently, I wasn't clear in that post.

I wasn't suggesting that someone mix and match injectors from different engines, I was suggesting that even if you installed the incorrect injector size as a set, within reason, the engine's control systems would compensate for it by increasing or decreasing injector pulse width.

Thanks for the clarification!