DIY Stage 3 LPFP

pysical

Sergeant
Jun 16, 2017
471
108
0
Ride
2009 335xi E90
Nice!! I just found out I won the Vader solutions stage 2 pump and bracket today!! I think all I need is a 3rd pump to make it a stage 3? Anyone know the answer to that?

Yeah add another and hook them together with a Y adapter and you have a stage 3 bucketless.
 

Erichale77

Lieutenant
Nov 14, 2016
827
447
50
Clearwater, FL
Ride
07 E92 coupe
I know, I was there to see the results. But my build is a little more extreme than his. I agree a stage 4 pump set up isn't for everyone but there are a few of us out there who need it. I run 2 HPFP's and 1300cc PI injectors. Oh and Jake H tunes my car as well.
 

pysical

Sergeant
Jun 16, 2017
471
108
0
Ride
2009 335xi E90
I know, I was there to see the results. But my build is a little more extreme than his. I agree a stage 4 pump set up isn't for everyone but there are a few of us out there who need it. I run 2 HPFP's and 1300cc PI injectors. Oh and Jake H tunes my car as well.

Yeah I just looked through your build log. I would say you have a unique setup. Thing will be a beast!
 

Erichale77

Lieutenant
Nov 14, 2016
827
447
50
Clearwater, FL
Ride
07 E92 coupe
Thank you. I liked your attention to detail in building your fuel set up. I'm in the process of building a new set up of my own with 3 pumps and a 10an line with an aluminum hat. Good luck with ur set up.
 

pysical

Sergeant
Jun 16, 2017
471
108
0
Ride
2009 335xi E90
Thank you. I liked your attention to detail in building your fuel set up. I'm in the process of building a new set up of my own with 3 pumps and a 10an line with an aluminum hat. Good luck with ur set up.

Thank you!

I had another idea setup with radium parts but I went with this. It may not look as nice as PR or FI kits, but it sits in the tank anyways. As long as it works then it should help me get to the 750 mark I am after. Be sure to post up pics of your setup once done. I am interested.
 

pysical

Sergeant
Jun 16, 2017
471
108
0
Ride
2009 335xi E90
Drill 2 holes on the top hat. Attach a wire to the bottom with a ring terminal, then put a bolt through it. Put a nut on it up top to hold it. Then you can put the ring terminal on top and put another nut on it.
 
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Slow_n54

New Member
Nov 25, 2018
1
0
0
Ride
PURE STAGE 2 E90 335i
Just read this all! Love the details you put in the DIY. My stage 2+ FI LPFP is almost giving out. I was wondering. What if you were to put the new Walbro 525 pumps in there. Would it be the same?
 

pysical

Sergeant
Jun 16, 2017
471
108
0
Ride
2009 335xi E90
I am not sure if the single 525 is to much stress on the EKP or not. However 2 450's is more than enough for 95% of the people.

If the EKP is fine with the 525 and you put the other 525 on the hobb switch then it should be the same. Googling shows the pumps are the same size so you should be good.
 
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Maniac0908

Corporal
Mar 22, 2018
109
6
0
Ride
07 335xi
Do holes In The bottom defeat the purpose of the bucket? Or is it ok?

And do pumps rest on the bottom of bucket or is there a gap between them?
I’m in the middle of building g this
 

V8bait

Lieutenant
Nov 2, 2016
500
773
0
Texas
Nice work, I think keeping the bucket is wise. If you're still plumbed through the factory filter/ regulator on the driver side, the bucketless and bucketed are both flow limited to the same amount. PR makes a drop in adjustable fuel regulator that eliminates the restriction and runs the driver side venturi off waste fuel through the regulator. If you need more fuel it would free up like 0.2 GPH by removing the saddle venturi and like 0.2 more for clearing the restriction which is a good chunk of additional fuel headroom.