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      03-18-2014, 10:01 PM   #1
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Before and After SteveAZ LPFP Kit - Walbro 255

I finally decided to go with the inline LPFP setup a few weeks ago and wanted to show you guys a before and after log. This is on my PTF E45 map and the white line represents my original LPFP with 74k miles on it and the red line represents a new LPFP with SteveAZ install kit.

I highly recommend getting this kit from him if you are looking to go with an inline setup.



Here is a before and after with 93 in the tank.

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      03-18-2014, 10:38 PM   #2
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looking alot better! is he taking orders again yet?
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      03-18-2014, 10:40 PM   #3
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I think he's waiting on a few fittings but should have them in a few days.
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      03-18-2014, 11:32 PM   #4
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so you did replace the old lpfp and added in steves kit ? just wonder how it looked with new pump and then with the inline added .
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      03-19-2014, 01:33 AM   #5
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Thanks Jstang...appreciate the follow up data!

Quote:
Originally Posted by cwarren View Post
so you did replace the old lpfp and added in steves kit ? just wonder how it looked with new pump and then with the inline added .
I sent the entire thing to him already assembled so he wouldn't have had a chance.

But if you're interested in some of that type of data

I don't know if he's seen this or not...I did tell him that his pump flow tested very low. I didn't show it in this round of testing, but when I adjusted the pressures to 75 PSI it was dismal (less than 50% of normal) , it was definitely "tired".

*Please excuse my setup..it's a work in progress and I have more parts coming first and foremost a new adjustable power supply (12-15V 35A) with volt and amperage gauges.

In the meantime these tests were done with a 12v battery that read slightly under 12volts during operation

Anyway..the tests...

New stock LPFP...



Jstang's LPFP...



And 1 of 2 new LPFP options I'm working on...

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      03-19-2014, 10:03 AM   #6
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Some smart people in this thread. Keep up the good/interesting work.
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      03-19-2014, 10:12 AM   #7
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saw this later on after my reply . definitely a good start on the testing of this steveaz im at the point where I need to do something soon
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      03-19-2014, 10:30 AM   #8
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That's great work Steve. Glad to see my old pump is being used for some R&D
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      03-19-2014, 03:02 PM   #9
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Quote:
Originally Posted by JStang View Post
That's great work Steve. Glad to see my old pump is being used for some R&D
Yessir....not only are we running stronger...we're running "greener" Your pump bucket (pump itself is 86'd) has been recycled and is in my car running 100% E85 at this very moment.

Technically I should be getting one of those clean air plates to drive in the carpool lane but who the heck wants a baby blue plate with a bunch of clouds on it
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      03-20-2014, 07:51 PM   #10
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Quote:
Originally Posted by JStang View Post
I finally decided to go with the inline LPFP setup a few weeks ago and wanted to show you guys a before and after log. This is on my PTF E45 map and the white line represents my original LPFP with 74k miles on it and the red line represents a new LPFP with SteveAZ install kit.

I highly recommend getting this kit from him if you are looking to go with an inline setup.



Here is a before and after with 93 in the tank.



What is required psi for lpfp? My cobb ap show 72 psi at idle,but what about going WOT??? I mean how can i understand my stock pump is still good or no?

What psi numbers is allright on WOT???
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      03-20-2014, 08:05 PM   #11
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@bmwm3redblack you want to see 72.5 flat at idle. It will fluctuate under WOT and heavy load, even a really well flowing setup will spike and dip a fair amount. What you don't want to see is a trend line falling below 60PSI or so. If it is not holding 50PSI, the pump should be replaced.

My car is all sorts of F'd up right now, but this is what "good" looks like WOT. Jstang's is strong as well.

http://www.datazap.me/u/135pats/e55-...ata=1-20-21-22
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      03-20-2014, 10:29 PM   #12
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72 psi is requested at all times.
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      03-20-2014, 11:18 PM   #13
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Anyone know what channel to log on the procede or bav tech software to log lpfp numbers?
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      03-21-2014, 09:38 AM   #14
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Quote:
Originally Posted by JStang View Post
72 psi is requested at all times.
Si if my pump will show lower than 70 psi , it means it should be replaced and no matter when it was shown at idle or at wot or during normal driving???
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      03-21-2014, 09:39 AM   #15
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Quote:
Originally Posted by 135Pats View Post
@bmwm3redblack you want to see 72.5 flat at idle. It will fluctuate under WOT and heavy load, even a really well flowing setup will spike and dip a fair amount. What you don't want to see is a trend line falling below 60PSI or so. If it is not holding 50PSI, the pump should be replaced.

My car is all sorts of F'd up right now, but this is what "good" looks like WOT. Jstang's is strong as well.

http://www.datazap.me/u/135pats/e55-...ata=1-20-21-22
Thanks probably i need to replace my pump +walbro255 upgrade from steve!!!
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      03-21-2014, 10:19 AM   #16
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Quote:
Originally Posted by bmwm3redblack View Post
Si if my pump will show lower than 70 psi , it means it should be replaced and no matter when it was shown at idle or at wot or during normal driving???
No. It is going to show lower than 72 psi. It's when it drops below 50 you need to be concerned.
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      03-21-2014, 10:23 AM   #17
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No setup just holds 72PSI flat…As noted it’s sustained pressure dropouts that you don’t want to see. If your setup is consistently supporting over 50-60PSI, it is doing OK. And the bottom line from a fueling standpoint are your trims and AFR targets, so that’s the first thing to be mindful of.
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      03-21-2014, 11:27 AM   #18
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Quote:
Originally Posted by SteveAZ View Post
Thanks Jstang...appreciate the follow up data!



I sent the entire thing to him already assembled so he wouldn't have had a chance.

But if you're interested in some of that type of data

I don't know if he's seen this or not...I did tell him that his pump flow tested very low. I didn't show it in this round of testing, but when I adjusted the pressures to 75 PSI it was dismal (less than 50% of normal) , it was definitely "tired".

*Please excuse my setup..it's a work in progress and I have more parts coming first and foremost a new adjustable power supply (12-15V 35A) with volt and amperage gauges.

In the meantime these tests were done with a 12v battery that read slightly under 12volts during operation

Anyway..the tests...

New stock LPFP...



Jstang's LPFP...



And 1 of 2 new LPFP options I'm working on...

more details please, On wot on e85 my lpfp dips in the 30's
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      03-21-2014, 07:01 PM   #19
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      03-21-2014, 09:27 PM   #20
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Quote:
Originally Posted by JStang View Post
No. It is going to show lower than 72 psi. It's when it drops below 50 you need to be concerned.
I checked the live data tonight, and got the lowest 61 psi and the highest 90 psi. So i hope it's ok???
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      03-21-2014, 09:29 PM   #21
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Quote:
Originally Posted by 135Pats View Post
No setup just holds 72PSI flatÖAs noted itís sustained pressure dropouts that you donít want to see. If your setup is consistently supporting over 50-60PSI, it is doing OK. And the bottom line from a fueling standpoint are your trims and AFR targets, so thatís the first thing to be mindful of.
so the lowest 61 psi is allright? And i can just install walbroo255 kit to support my lpfp?
As i've understood no lpfp replacement needed?
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      03-21-2014, 10:13 PM   #22
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Quote:
Originally Posted by bmwm3redblack View Post
so the lowest 61 psi is allright? And i can just install walbroo255 kit to support my lpfp?
As i've understood no lpfp replacement needed?
That's perfectly normal. What fuel were you running?
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