I am replacing my fuel pumps and I just ordered the Walbro fp from Pelican because it states that Walbro is an OEM supplier to MB. However, After doing several searches on Google, I see that Walbro is infact a high performance fp. Does anyone know what the fuel pressure should be for a 2.6 and will that change because of the fuel pump? Also, all the pictures that I see that look like the one I ordered states its something like 255 liters per hour whereas the Bosch I think comes out to 168 liters per hour. Any issue with this and has anyone ever used a Walbro pump?

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1990 190E 3.0L