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      01-01-2023, 08:02 PM   #22
whyzee125
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Drives: Dinan stage 2 335i
Join Date: Jul 2014
Location: Chattanooga Tn

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Quote:
Originally Posted by dreyo27 View Post
So I have lots of experience with this.
1st buckless pumps suck. Had a dual 450 walbo setup and it was terrible. Take an off ramp to quick especially to the right and anything below 1/3 tank will cause the car to sputter, maybe even die.

Bucketed 450s are tried and true. With that said 21PSI of boost and e60 mix is at the upper range of it capabilities. However its cheap. They also have check valves so you can run 2 of them. Here is the LOG of it being pushed passed its capabilities on OEM turbos. https://datazap.me/u/dreyo27/bq-e60-...-12-21&mark=66

Bucketed 535 pumps are 525s without the check valve so they flow more. However the problem is the EKPM tends to over heat. I found a 3D printed part that integrates a blower fan to keep it cool, picture below. I tried EKPM2 and 3 and both overheated. However with the blower fan there was no problems.
Also if you want to make your own pump its quite easy. I have a 3d printed bracket that fits in the OEM bucket and lets you use the the factory float. Would also recommend picking up the BMP fitting so you can use the OEM line. Here is a log of that a walbro 535 pump running e77 mix without a hickup. https://datazap.me/u/dreyo27/overboo...1-4-17&mark=73
Got any info or a source on that fan setup? I'm running a Fuel It stage 3 (not sure what pumps are in there actually, both are upgraded) on a stock EKPM3.

I'm on the 3rd EKP, the second was a used one and the most recent was a brand new one with warranty but I'd like to keep it alive even if warrantied.
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