BPM4 EKP Installation for E93

doublespaces

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Oct 18, 2016
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2009 E93 335i
This is just a photo dump for now until I have more energy to add the details.
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In an E93, the EKP is in the 'partition' area which is a hidden void between the trunk and the back seat. This area houses the roll over safety system, PDC and comfort access modules and other stuff. In the E90/E92, the EKP is in the trunk on the passenger side wheel well, somewhere in that area.


Remove partition cover and you'll see the EKP(Black) mounted at the bottom near the PDC module(white):
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Before you unbolt the EKP from it's bracket, be smarter than me and lift the seat back up and undo the bolts on the bottom so the whole thing comes off:
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I begun to fasten the harness connector to the old EKP mounting point, however on an E93 this doesn't leave a good place for the BPM4:
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So I decided to mount it to this cross bar instead:
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Which leaves a new place for the EKP, which means I don't have to fish as many wires back to the trunk:
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Here is the power output wires and mil-spec pigtail that connects to the hat:
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Since my EKP is right next to my pumps, I decided to shorten mine a bit(I'd recommend making them a couple inches longer than mine if you have an E93):

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Connect the power harness to the EKP, there is also a chassis ground conveniently next to this location:
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Down toward the LPFP:
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Cut the old power cable out and also cut the rubber boot to make room for the wider gauge power wires:
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Wires through the boot:
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Hopefully you remembered which wires went to your LPFP:
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Done on this end:
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The EKP comes with a strong double sided adhesive which is holding it. The seat back and another panel also hold it in place. Notice the red power cable going toward the battery in the top left:
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Standing at the left rear quarter panel looking at the back seat:
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Can see the red 12v cable coming through:
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For easy access and proper routing remove this so you can remove the grey carpet panel:
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And then you have easy access to run that wire down to the battery:
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----

Things I didn't mention, due to the new placement of the EKP I did have to bust off a few of these ribs on the panel that covers that up behind the seat back:
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Also worth mentioning, you must contact @EOSpeed to get the BPM4 windows software, otherwise you won't be able to connect to the device.
 

matreyia

Major
Apr 19, 2017
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And? How do you like the new controller? Notice anything different?
 

scrllock

Sergeant
Dec 17, 2018
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2011 335xi
Another thing worth mentioning, the fuel pumps are not primed like the old EKP so don't worry if you don't hear them when you key the ignition. I can't remember why but it had something to do with the car unlocking.

I can hear my 450 priming when I unlock the car, and it sounds a lot louder than the oem setup, though I'm on an N55 which is a slightly different torqbyte config.

Are you just using a single pump?
 

matreyia

Major
Apr 19, 2017
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I can hear my 450 priming when I unlock the car, and it sounds a lot louder than the oem setup, though I'm on an N55 which is a slightly different torqbyte config.

Are you just using a single pump?

I hear mine too... especially when flashing mhd or xhp.
 

Rob09msport

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Oct 28, 2017
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09 335i msport le mans 18 x5
I hear mine too... especially when flashing mhd or xhp.
That's bad they are supposed to disable during flash I wonder if that's diff vs stock. Def make sure a full write has a charger if that's the case. I've gotten in the habit of not using charger which is prob not wise.
 

matreyia

Major
Apr 19, 2017
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That's bad they are supposed to disable during flash I wonder if that's diff vs stock. Def make sure a full write has a charger if that's the case. I've gotten in the habit of not using charger which is prob not wise.

I just flashed xHP yesterday and heard it. Battery charger or not, it's there. And also, two minutes is hardly any reason to put on a charger...imo.
 

scrllock

Sergeant
Dec 17, 2018
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2011 335xi
I haven't heard it with mhd in quite some time. Been a long time since I needed an xhp flash, but maybe they didn't get that logic from martial and co. I'd put a charger on for anything but xdelete, small odds but large risk.
 

Rob09msport

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Oct 28, 2017
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09 335i msport le mans 18 x5
I just flashed xHP yesterday and heard it. Battery charger or not, it's there. And also, two minutes is hardly any reason to put on a charger...imo.
I only mean don't forget when you have do a full write for some reason. I do 40 min flashes just shutting air and drl off lol.
 

EOSpeed

Corporal
Nov 7, 2016
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Chicago, IL
We recommend disconnecting the pump side connector when doing a flash. Since we piggyback off the PT-CAN signal, and you flash, it cuts the PT-CAN signal so the unit defaults to 75% output to not leave you stranded somewhere. We are working on a firmware update eventually to fix this issue.
 
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matreyia

Major
Apr 19, 2017
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We recommend disconnecting the pump side connector when doing a flash. Since we piggyback off the PT-CAN signal, and you flash, it cuts the PT-CAN signal so the unit defaults to 75% output to not leave you stranded somewhere. We are working on a firmware update eventually to fix this issue.

So is my car NOT running correctly permanently now because I flashed it after installing your controller and the controller is permanently stuck at 75% output? If so, we need to fix this. I can email you directly if this is the case.
 

EOSpeed

Corporal
Nov 7, 2016
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Chicago, IL
So is my car NOT running correctly permanently now because I flashed it after installing your controller and the controller is permanently stuck at 75% output? If so, we need to fix this. I can email you directly if this is the case.

No NO it only defaults to 75% with no CAN signal, which happens during flash process! As soon as car restarts and all systems are go everything is fine again....you would know if you pumps were only running 75% ;-)
 
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houtan

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Nov 2, 2017
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135i N55 DCT; PS2
Adding pictures of my bpm4 install in a 135i in case it may be of use.
 

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@juan35i

Private
Feb 1, 2018
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2010 BMW 135i
If running upgraded EOS BMP4, 6an fuel lines with an external fuel filter and running full E85, is it normal for the vehicle to take a long time cranking until it starts?
 

doublespaces

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Oct 18, 2016
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2009 E93 335i
Double walbro 450s
Are you getting fuel pressure? Leaky injectors? Leaky fuel lines? Are your fuel hats stock?

Some fuel pumps don't have check valves, this allows the fuel in the line to drain and that prime does nothing. Does your fuel system hold pressure before starting up or does it all drain out?

I do recall a time when this prime did not work on the bpm4. I can't remember what happened, maybe it was a low battery, or perhaps a firmware update, or a wiring problem, I think it gets that prime signal over the can bus. I can't remember though, all of this is hazy for me now.