Are the US/Euro E36 fuel pumps different?

[morerevsm3]

3.2's are 5 bar, the injector specs are at 3 bar

[zparker]

Alan, have you actually seen this pressure or is it another internet myth....lol

Need to know for tuning.

[morerevsm3]

mate that tunes BMW's, including custom tuning the siemens ecu confirmed the pressures

[zparker]

nice so in all actuality we are running 31lb injectors due to the pressure.

[Razziel24]

got my 2 X GSS341 pumps and install kits from here-
http://forums.bimmerforums.com/forum...d.php?t=799621

Hi Allan, why did you get 2 GSS341's ?

[morerevsm3]

on race tracks, you get severe fuel starvation on right hand corners, extra pump in left side of tank solves it

[zparker]

i agree to that alan, I have that on video.

[Razziel24]

where can I get the 5bar fuel pressure regulator ?

[morerevsm3]

standard part for E36 3.2 M3, or adjustable regulator from auto parts store

[M Dizzle]

with the dual fuel pump setup, do you have a switch to turn off 1 of the pumps when the tank gets low to keep it from overheating?

[morerevsm3]

no, and have been running duel pumps for about 18 months now, first with stock pumps, now walbros

[M3EvoBR]

do you know where I can get a set of those pumps ???
May I ask you if you know a place t buy a set of performance chips for S50B32 ??? I read that you use Alpha N with cf plenun.

Best, Eduardo

[morerevsm3]

do you know where I can get a set of those pumps ???
May I ask you if you know a place t buy a set of performance chips for S50B32 ??? I read that you use Alpha N with cf plenun.

Best, Eduardo

there is a link further up this page for where I bought pumps, they still have them, S50B32 is not just chip change, surface mount inside ecu has to be soldered in place, then ecu flashed with new program

[jmitro]

bf.c comes through again. Alex L suggested I get a Walbro fuel pump for my new engine, thanks for all the helpful tips you guys have provided I just ordered a GSS340 from APE

[M3 Euro LTW]

S50B32 is not just chip change, surface mount inside ecu has to be soldered in place, then ecu flashed with new program

Working hard to change that.

Suspect that within a couple of months I will be able to supply custom flashs (even dyno tuning) for our cars locally, and a full set of upgrade stages to my customers.

I'm open to suggestions, but what I plan on accomplishing with the help of my tuning partner(s) is the following.

Stage 1: Stock Engine reflash. (Grp N, or an improved version thereof)
Stage 2: Stock Engine with Shrick/Sunbelt, based on GrpN, but fine tuned
Stage 3: Shrick 284, or perhaps Sunbelt, Thin head-gasket, valve job.
Stage 4: Full on race tune with 12.5 pistons, custom cams (*)

The idea of these 4 stages is a stock motor with HFM for excellent reliability and to take advantage of the factory DME which is affordable, provided with most engines, and easy to work with.

Within 2-3 months I hope to have Plug and Play DTA systems that plug right into your factory harness with minimal modification. These will of course allow for the ultimate in custom tuning for FI, traction control, data logging, launch control, clutchless upshifting and all the other benifits of a pro-level SEM. Should be well under $2K for a full system you plug in and just use with a map that plain works from the get go. It will have an 88 pin connector so you don't have to chop your harness at all.

Cool stuff coming soon!

(*) will take the longest as I have not built the engine for this yet. But if someone builds it, and brings it to Chicago, I could do the tuning soon.

[Maleckis]

The idea of these 4 stages is a stock motor with HFM for excellent reliability and to take advantage of the factory DME which is affordable, provided with most engines, and easy to work with.

Within 2-3 months I hope to have Plug and Play DTA systems that plug right into your factory harness with minimal modification. These will of course allow for the ultimate in custom tuning for FI, traction control, data logging, launch control, clutchless upshifting and all the other benifits of a pro-level SEM. Should be well under $2K for a full system you plug in and just use with a map that plain works from the get go. It will have an 88 pin connector so you don't have to chop your harness at all.

For the S50B30 or B32 engine or both of them? I would be interested in for sure.

[jmitro]

standard part for E36 3.2 M3

this FPR is integral to the fuel system under the intake manifold on the 3.2, correct? i don't see any FPR under the chassis along the fuel lines.

[gobuffs]

this FPR is integral to the fuel system under the intake manifold on the 3.2, correct? i don't see any FPR under the chassis along the fuel lines.

Yes, the FPR is back behind/under the 6th throttle body. I cut mine off and added and adjustable FPR that I was able to attach to my data logging dash.

[94is]

My engine is so stock. Please help Alex!

[Emsan]

My FP just went on me yesterday. I am posting mainly for the link below.

I was going to order a Walbro GSS341 as they are much cheaper than oem and put it in the oem barrel assembly, but opted to go stock with sending unit and assembly since my car is getting old and I'm prepping it to race. Local race teams also run stock pumps so they are good enough.

I will also be running dual stock pumps down the road over the winter, I'll install the second pump.

For those interested, I will be following this guide to install the second pump.
PDF made by a race team.

http://www.pumpkininc.com/content/doc/guide/ag-8.pdf

[morerevsm3]

I have modified my system from pumpkin setup after a couple of pump failures, now run all return fuel to left side of tank, with stock pump in that side set up like pumpkin left pump, but the fuel from it is pumped into return of right pump which is now a Bosch 040 pump

[snikwad]

You have to put in a T fitting to check fuel pressure.

I upgraded to a Walbro GSS340, easy install. http://www.apeusa.com sells pumps and install kits (sock, wiring, foam sleeve, etc). I noticed better performance all around, since the 5bar regulator will stress the stock pump a bit, esp once it's old and starts to wear out. Mine had 150k on it when it died this past summer.

would these fit on my E46 328i? what do u recomend?

[jmitro]

For those interested, I will be following this guide to install the second pump.
PDF made by a race team.

http://www.pumpkininc.com/content/doc/guide/ag-8.pdf

I used that also, it's a nice guide.

problem is.....I wired each fuel pump with it's own wiring and fuse, and kept blowing fuses on the second fuel pump. First with the stock 15a fuse, then with a 20a fuse.

Any ideas why?

[morerevsm3]

runs too hot plumbed that way, cost me 3 walbros working it out

[jmitro]

so how did you wire it?