MSefi.com read only forum (Jan.15,2018)

Hi all - full on NOOB here, so be patient.

MB 4.5L d-jet with old bosch blue d-ject injectors.

Are newer injectors more efficient than the old d-jet ones (circa 1971) ?

I saw where some folks were using mustang 19lb injectors, maybe even 24 lb.

So I looked up my bosch d-jet injectors- 39 lb !!!

Would a more modern injector improve gas milage ?

More modern injectors provide better atomisation of the fuel which will affect the combustion in a positive way. However I'm not sure whether the price of more modern injectors would be recovered by fuel-economy increases unless you intend to drive long distances with it - if its a daily driver I'd go with newer injectors.