I think my fuel pump is on its way out and since I'm doing a m30 swap, I was wondering if it was worth upgrading the fuel pump for the larger engine. Has anyone heard or know of any good upgrades or is the stock fuel pump sufficient. I only have 1 pump (1990 325i).
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Fuel pump upgrade for m30 powered e30?
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The pump from the E30 325i will be sufficient. As an example I heard of one who ran with a 3.0 bar regulator + 0.9 bar forced induction (3.9 bar effective fuel pressure): he had 320 hp (injectors 366cc @ 3.0 bar).
So there is no point in upgrading the pump, you can get another one just like it. But with some work you could replace the in-tank pump with one of the cheap Walbro 255 ltr/h pumps:
/Mattias
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