Which TREperformance fuel pump to get?

[turbo55]

My 1987 325is's external (high pressure) fuel pump has been buzzing pretty loudly, I think it's probably on its way out. Haven't checked if the in-tank one is still working, but it probably doesn't matter since the external one does most of the work and if that one is done then you're done.

Looking to convert to a single pump setup and have heard good things about TREperformance pumps. The question is, there are 3 different ones. Anyone have any experience with choosing between these in the past? I have stock injectors (I think they're 13 lb), recently cleaned. No plans to go to forced induction.

TRE-340:

http://treperformance.com/i-6323873-bmw-e30-255-lph-fuel-pump-1982-1994.html

TRE-383:

http://treperformance.com/i-972570-bmw-325-e30-oem-replacement-fuel-pump-1986-1994.html#wsm-prod-tab-details

TRE-507:

http://treperformance.com/i-7600734-bmw-325i-oem-replacement-fuel-pump-1985-1993.html

TRE-340 seems to be the best choice (highest capacity, only $70), but am I overlooking anything?

[dnguyen1963]

TRE-340 255 LPH Fuel Pump fits these cars:

Many BMW Models with return style fuel systems

[turbo55]

Exactly. Not enough info, which is why I'm wondering if anyone has gone through this before. I know people have put the 340s in, but I don't know about the others.

[dnguyen1963]

Tre 340 is what I have in mine. I don't know about other pumps.

[turbo55]

Thanks for the input. I probably will end up going with the 340. The others don't seem too popular...

[dnguyen1963]

Just ditch the old BMW fuel pump coupler and use a piece of fuel injector hose to connect the pump to the fuel line.

[Seawolf]

The 383 is no longer available. I have a 340 in my 325iX and 540i - they both work fine