BMW e23 745i fuelpump

[Robert745i]

Hello, I am Robert from the Netherlands and owns an e23 745i for now 8 years. I have a problem with a new fuel pump

The new pump has 3bar pressure and suits acc. the surplier an e23 745i.

Wenn I drive and push the gaspedal full it accellerates for 5-6 seconds and then stalls and starts to shock, it does not get in my opinion sufficient fuel.

The fuelpump brings 130L/hr. acc. the supplier
So I mounted my old pump and the problem was solved, so the new pump does not deliver sufficient fuel
Does anyone have the offical delivery amount for the 745i fuelpump.
Because the new pump has undercapacity I like to return it to the supplier who sold it for an 745i
Thanks Robert

[MauiM3Mania]

Is the new pump a OEM BMW part?

[Robert745i]

Is the new pump a OEM BMW part?

No aftermarket.

[Jay535is]

The pumps output should far exceed what the motor needs, and fuel delivery to the injectors is limited by the fuel pressure regulator, with excess fuel going back to the tank.
Why swap out fuel pumps if the original works fine?
Most guys use a 255lph pump from TRE or Walbro, in tank pump is preferred-unless you have a 100L fuel tank with the bayonet fitting and no lift pump...
http://www.mye28.com/viewtopic.php?f...1410&start=100