I’m still having fuel pressure issues. Did you have to install any backend software to the BPM4 unit?
Ad: BPM4 (LPFP) Fuel Pump Control Module Released
- Thread starter EOSpeed
- Start date
No. Plug and play. If you have pressure issues, it is most lilely your pump(s). All my pumps were newly installed. Stage 3 precision raceworks.
Not sure what is going on here exactly, but you have a throttle closure and a big timing pull which may just be post shift stuff?
Also, you should stop logging timing cyl. 2-6(*CRK) because it is essentially the same value for all six and instead log the cyl1-6 Timing cor (*).
To me, this before shot looks like your pump isn't able to keep up and actually spends more time in the 50's than after the EKP upgrade:
Also, you should stop logging timing cyl. 2-6(*CRK) because it is essentially the same value for all six and instead log the cyl1-6 Timing cor (*).
To me, this before shot looks like your pump isn't able to keep up and actually spends more time in the 50's than after the EKP upgrade:
Yep.
Understood. They do change if there’s a timing correction. I save a logging channel this way by not logging cyl1-6 Timing cor (*) and Cyl1 timing.
It wasn’t a great pull under ideal conditions, and I’m now a little concerned about the -6 timing for all six cylinders in the middle of my 4th gear pull:
Snapshot showing where I’m talking about in the Datalog:
But then again my rail pressure may be higher with the BPM4, which is the real goal, right?
(Not ideal apples to apples comparo, more testing coming.)
EKPM3: In third gear WOT Rail pressure dips as low as 1994 psi:
BPM4:
At around the same rpm range in the 3rd gear WOT pull, my rail pressure does not seem to drop below ~2500psi.
(Not ideal apples to apples comparo, more testing coming.)
EKPM3: In third gear WOT Rail pressure dips as low as 1994 psi:
BPM4:
At around the same rpm range in the 3rd gear WOT pull, my rail pressure does not seem to drop below ~2500psi.
At the behest of @matreyia I will be changing my LPFP sensor this weekend.
I have dual 525 running on the BPM4. Works great. Biggest issue I had was related to the fuel pressure regulator, a configuration issue on my end completely unrelated to the BPM4. Also had a situation when the battery was dead, the thing didn't want to wake up and prime the pumps. I haven't pinned down the true cause, if it was a voltage issue or we other electrical issue but that was the scope of my problem, basically the only thing that gave me issues.
Do you have the billet top hats? I want to buy a BPM4 but I have concerns as well with melting oem top hats. I would buy the EOS billet top hats to alleviate this concern but they don’t offer them on the website.
Yes. There has also been some improvements to the design to make them easier to install as well.
does the bpm4 play nice if you have a boost referenced full return system? or should I stick with hard wired relay switched pumps?
With the bpm4 you can do away with the boost referenced fuel system as the bpm4 controls the pressures.
The problem with hard wired pumps is they run 100% duty cycle and putting an unnecessary current draw on your electrical system.
Also running them full blast puts unnecessary heat into the fuel, you want to keep fuel cool before it reaches the motor.
The problem with hard wired pumps is they run 100% duty cycle and putting an unnecessary current draw on your electrical system.
Also running them full blast puts unnecessary heat into the fuel, you want to keep fuel cool before it reaches the motor.
When will these be back in stock? How do we order with the billet top hats?
EDIT: Thanks your finding and reading my post. Unfortunately, Spoolstreet is no longer a neutral platform where we can have honest discussions on subjects and products freely.
For this reason I have deleted all information I posted on the forums.
For this reason I have deleted all information I posted on the forums.
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Presently I have a 2 pump BPM4 with a single Walbro 450 working fine without issue, but as I type! I am almost done making/installing my custom big turbo set-up so I am now looking to add another fuel pump. After seeing images of melted plastic connectors etc. I would like to upgrade the top hat to eliminate any possible fuel tank leaks and/or fire related issues in order to myself and others safe. I tried e mailing and sent p.m.'s but have gotten no response from EOS concerning this, I just don’t get it! I hate to say it but I think if a vendor is selling a product which is already seen to create an issue which has the potential to morph into something more , they should be obligated to at least respond to queries about providing a possible solution in order to keep their customers safe, what is the point of having all the performance in the world if you risk burning down at any arbitrary time?
We hardly are ever on the forums these days, if you sent an email, sorry we must have missed it, we do our best to get back to everyone in a timely manner. This is part of our business motto. Replying to your DM now. Thanks
Soooo.... should if I go ahead with my custom LPFP upgrade, what connectors should I go with?
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