Modern Injectors vs older injectors (12 hole vs 4 hole etc)

[mattysshop]

Firstly not for performance -

efficiency, daily, economy, grandma driving etc...

basically comparing identical sized injectors with one another, same install, same plug etc..
Impedence, and flow rate @ 3 bar.

i am also asking this question as the injector supplier i use has hundreds of 21040's in stock, but no 70120's and i would like to pop a set of fresh injectors in my IS200 next service, as it is easier, and cheaper than pulling them out to get cleaned..

1G-FE injectors - 23250-70120 - 210cc - 4 hole style
1NZ/2NZ injectors - 23209-21040 - 210cc - 12 hole style

http://densoautoparts.com/fuel-injectors

Cheers,

[MRMOPARMAN]

The finer you can make it spray, the better, as there will be less chance of the droplets falling out of the airstream. Not sure how much, but it should improve the economy slightly.