S54 swap fuel delivery options.

[WannaBe30]

So I know about using the factory s54 fuel pump, fuel pressure regulator and fuel filter.

I saw on someone's build thread they used another type of fuel pump but for the life of me I can't find that thread...

I think it started with a "d" brand name

What other or better options for fuel pump are there.


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[FredK]

That was Andrew. He used a Deatschwerks DW300.

[WannaBe30]

Thank you for some reason I though he used a factory one


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[E30Strube]

I kept the stock in-tank unit and replaced the in-line unit with a Walbro. Stock regulator and one of the small in-line filters.

[WannaBe30]

You mean the stock e46 m3 in take unit? And added another fuel pump? Or filter not sure what you mean e30strube

Ill already ordered a deatschwerks


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[E30Strube]

The stock E30 in-tank pump.

It is just acting as a puller to get fuel out of the tank and to the in-line pump. I had an M3, so it had two pumps stock. I assume it's the same on a standard E30. I originally wanted to change the intank pump to a Walbro and delete the inline pump, but the Walbro wouldn't fit into the opening to the tank.

[WannaBe30]

Non m has one in tank pump


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[Andy Mechnic]

I'm thinking the way you went is the easiest upgrade WannaBe30... I'll be doing something similar with my swap.

[nando]

why not just use the E46 pump? it's simple, effective and cheap.

[ForcedFirebird]

Non m has one in tank pump


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Only late models. The m3 used early model setup that has 2 pumps, a low pressure high volume lifter pump in the tank, external inline high pressure pump to the engine. Everything (except m3) after 1988 used a single pump.

[WannaBe30]

Only late models. The m3 used early model setup that has 2 pumps, a low pressure high volume lifter pump in the tank, external inline high pressure pump to the engine. Everything (except m3) after 1988 used a single pump.

Good info, I forgot about that i knew the earlys did have something different about their fuel system


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[WannaBe30]

why not just use the E46 pump? it's simple, effective and cheap.

Because even new with my dealer cost it cost more and I didn't want to buy a used one. But also from what I've heard these are more dependable than the stock one.

I receive it too! Very fast shipping. I'll post some pix on my build thread


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[M3PO]

Am I correct in assuming that the stock Eta twin pump setup can't supply enough pressure for an S54? I need to replace the external inline pump with a Bosch 044 or similar?

[nando]

Bosh 044 is overkill for a non-turbo S54