THE LARGEST BMW 2-SERIES FORUM ON THE PLANET
2Addicts
2Addicts
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
2Addicts | BMW 2-Series forum Technical Topics N55 (M235i) Engine, Transmission, Exhaust, Tuning N55 HPFP Upgrade

Post Reply
 
Thread Tools Search this Thread
      06-12-2016, 09:36 AM   #23
ronanz
Gettin It Figured Out
ronanz's Avatar
United_States
1505
Rep
2,333
Posts

Drives: 435i FBO PS2 bm3 w/ options
Join Date: Jul 2014
Location: Southwest Region

iTrader: (3)

Quote:
Originally Posted by abirmaher View Post
Nowhere specific but over my past few years with BMW's I've just always heard good about Fuel-It.

my apologies, I misread your post....I thought you were referring to the newly released Dinan LPFP. You're correct, Fuel-It is THE go to in LPFP's for the N55


.
__________________
.

My Build Thread can be found HERE
Appreciate 1
      06-12-2016, 09:54 AM   #24
abirmaher
Lieutenant Colonel
abirmaher's Avatar
United_States
453
Rep
1,879
Posts

Drives: 2018 BMW M2 (BSM/ 6SPD)
Join Date: Feb 2010
Location: Miami, FL

iTrader: (13)

Garage List
2018 BMW M2  [0.00]
2014 BMW M235i  [3.50]
Quote:
Originally Posted by ronanz
Quote:
Originally Posted by abirmaher View Post
Nowhere specific but over my past few years with BMW's I've just always heard good about Fuel-It.

my apologies, I misread your post....I thought you were referring to the newly released Dinan LPFP. You're correct, Fuel-It is THE go to in LPFP's for the N55


.
Or at least I hope so. My OEM one died Friday. Planning on putting the fuel it one in today.
__________________
2018 BMW M2 | Follow my build on Instagram @_m0010
Appreciate 0
      06-12-2016, 05:07 PM   #25
Bee Pee
Brigadier General
United Kingdom
1152
Rep
3,798
Posts

Drives: AW M2 DCT
Join Date: Jun 2010
Location: SW London

iTrader: (3)

Quote:
Originally Posted by abirmaher View Post
Or at least I hope so. My OEM one died Friday. Planning on putting the fuel it one in today.
Later cars come fitted with same HPFP as m2 part nor 13518604321 - see below

http://www.realoem.com/bmw/enUS/part...231&series=F22

Might be worth replacing your broken Oem HPFP with this new Oem type....
__________________
Fettled M135i EB AT - gone but not forgotten:
AW M2 DCT
Appreciate 0
      06-12-2016, 11:03 PM   #26
abirmaher
Lieutenant Colonel
abirmaher's Avatar
United_States
453
Rep
1,879
Posts

Drives: 2018 BMW M2 (BSM/ 6SPD)
Join Date: Feb 2010
Location: Miami, FL

iTrader: (13)

Garage List
2018 BMW M2  [0.00]
2014 BMW M235i  [3.50]
Quote:
Originally Posted by Bee Pee View Post
Later cars come fitted with same HPFP as m2 part nor 13518604321 - see below

http://www.realoem.com/bmw/enUS/part...231&series=F22

Might be worth replacing your broken Oem HPFP with this new Oem type....
Im talking about my LPFP. Replaced it today running great.
__________________
2018 BMW M2 | Follow my build on Instagram @_m0010
Appreciate 0
      06-12-2016, 11:11 PM   #27
abirmaher
Lieutenant Colonel
abirmaher's Avatar
United_States
453
Rep
1,879
Posts

Drives: 2018 BMW M2 (BSM/ 6SPD)
Join Date: Feb 2010
Location: Miami, FL

iTrader: (13)

Garage List
2018 BMW M2  [0.00]
2014 BMW M235i  [3.50]
Quote:
Originally Posted by Bee Pee View Post
Later cars come fitted with same HPFP as m2 part nor 13518604321 - see below

http://www.realoem.com/bmw/enUS/part...231&series=F22

Might be worth replacing your broken Oem HPFP with this new Oem type....
Also just checked and that part number is for the one that my car has which is a 3/14 build. When are you comparing to that the pump changed?
__________________
2018 BMW M2 | Follow my build on Instagram @_m0010
Appreciate 0
      06-13-2016, 12:51 AM   #28
Bee Pee
Brigadier General
United Kingdom
1152
Rep
3,798
Posts

Drives: AW M2 DCT
Join Date: Jun 2010
Location: SW London

iTrader: (3)

Hpfp part numbers changed for cars built from 2015 onwards
Appreciate 0
      06-13-2016, 02:55 AM   #29
Anas M235i
Enlisted Member
Anas M235i's Avatar
Saudi Arabia
7
Rep
39
Posts

Drives: Alpine white, Coral red M235i
Join Date: Dec 2014
Location: Al-Khobar , Saudi Arabia

iTrader: (0)

Quote:
Originally Posted by Bee Pee View Post
Hpfp part numbers changed for cars built from 2015 onwards
interesting..... does anyone have more information about new HPFP's if they are rated better than the one it replaced... a data sheet or something?
__________________
2014 M235i AW 8AT,
ER: FMIC & DP & CP ,
BMS: JB4 EWG(OBDII)
Appreciate 0
      06-13-2016, 11:31 AM   #30
Bee Pee
Brigadier General
United Kingdom
1152
Rep
3,798
Posts

Drives: AW M2 DCT
Join Date: Jun 2010
Location: SW London

iTrader: (3)

Quote:
Originally Posted by Anas M235i View Post
interesting..... does anyone have more information about new HPFP's if they are rated better than the one it replaced... a data sheet or something?
My bad rechecked and HPFP changeover from old part nr to new part nr was mid 2014 ie build dates June 14 and later.....

No datasheet or product info only that the part nr I quoted above is whats used in M2 so should be capable of working at higher boost/torque.

If BMW M2 HPFP are failing then no doubt BMW will have an OEM fix as a QEP or similar recall that should also be retrofittable on Mx35i's and F3x N55's....
__________________
Fettled M135i EB AT - gone but not forgotten:
AW M2 DCT
Appreciate 1
      06-13-2016, 12:38 PM   #31
rwalker
Major
United_States
296
Rep
1,085
Posts

Drives: the wheels off
Join Date: Nov 2006
Location: San Diego, CA

iTrader: (1)

Quote:
Originally Posted by Anas M235i View Post
interesting..... does anyone have more information about new HPFP's if they are rated better than the one it replaced... a data sheet or something?
I tried to get them from a Bosch distributor, but he told me the specs are held confidential between BMW and Bosch.
__________________
rwalker@rwalker.com (I really dislike Private Messaging)
Appreciate 0
      06-14-2016, 02:00 AM   #32
Anas M235i
Enlisted Member
Anas M235i's Avatar
Saudi Arabia
7
Rep
39
Posts

Drives: Alpine white, Coral red M235i
Join Date: Dec 2014
Location: Al-Khobar , Saudi Arabia

iTrader: (0)

Quote:
Originally Posted by rwalker View Post
I tried to get them from a Bosch distributor, but he told me the specs are held confidential between BMW and Bosch.
The struggle continues
__________________
2014 M235i AW 8AT,
ER: FMIC & DP & CP ,
BMS: JB4 EWG(OBDII)
Appreciate 0
      06-14-2016, 02:03 AM   #33
Anas M235i
Enlisted Member
Anas M235i's Avatar
Saudi Arabia
7
Rep
39
Posts

Drives: Alpine white, Coral red M235i
Join Date: Dec 2014
Location: Al-Khobar , Saudi Arabia

iTrader: (0)

Quote:
Originally Posted by Bee Pee View Post
My bad rechecked and HPFP changeover from old part nr to new part nr was mid 2014 ie build dates June 14 and later.....

No datasheet or product info only that the part nr I quoted above is whats used in M2 so should be capable of working at higher boost/torque.

If BMW M2 HPFP are failing then no doubt BMW will have an OEM fix as a QEP or similar recall that should also be retrofittable on Mx35i's and F3x N55's....
I am getting frustrated by this HPFP ..... the VW guys for example are enjoying their cars better from this point of view
__________________
2014 M235i AW 8AT,
ER: FMIC & DP & CP ,
BMS: JB4 EWG(OBDII)
Appreciate 0
      06-14-2016, 03:18 AM   #34
Bee Pee
Brigadier General
United Kingdom
1152
Rep
3,798
Posts

Drives: AW M2 DCT
Join Date: Jun 2010
Location: SW London

iTrader: (3)

Suppose the idea of mounting M3/4 twin vacuum pump c/w 2 x HPFP's, HPF rail and ancilliary plumbing to connect lines from HPFP's to HPF rail has been ruled out ????
__________________
Fettled M135i EB AT - gone but not forgotten:
AW M2 DCT
Appreciate 0
      06-14-2016, 10:47 AM   #35
Anthony235
Lieutenant Colonel
Anthony235's Avatar
United_States
682
Rep
1,546
Posts

Drives: m235i
Join Date: Feb 2016
Location: OC, Ca

iTrader: (2)

Garage List
2015 BMW  [0.00]
Quote:
Originally Posted by Bee Pee View Post
Suppose the idea of mounting M3/4 twin vacuum pump c/w 2 x HPFP's, HPF rail and ancilliary plumbing to connect lines from HPFP's to HPF rail has been ruled out ????
I think the conclusions was that it is cheaper to go with a PI kit and less complicated.

Now if there was a drop in OEM style solution I wouldn't mind spending a little more $$ for that.
Appreciate 0
      06-14-2016, 01:00 PM   #36
rwalker
Major
United_States
296
Rep
1,085
Posts

Drives: the wheels off
Join Date: Nov 2006
Location: San Diego, CA

iTrader: (1)

Quote:
Originally Posted by Bee Pee View Post
Suppose the idea of mounting M3/4 twin vacuum pump c/w 2 x HPFP's, HPF rail and ancilliary plumbing to connect lines from HPFP's to HPF rail has been ruled out ????
Yes, because you also have to put together the electronics to regulate the 2nd pump.
__________________
rwalker@rwalker.com (I really dislike Private Messaging)
Appreciate 0
      06-14-2016, 02:00 PM   #37
PeterPure
Major
PeterPure's Avatar
Belgium
659
Rep
1,350
Posts

Drives: BMW F80 M3
Join Date: Jun 2008
Location: Belgium

iTrader: (0)

Garage List
2017 BMW F80 M3  [0.00]
Quote:
Originally Posted by rwalker
Quote:
Originally Posted by Bee Pee View Post
Suppose the idea of mounting M3/4 twin vacuum pump c/w 2 x HPFP's, HPF rail and ancilliary plumbing to connect lines from HPFP's to HPF rail has been ruled out ????
Yes, because you also have to put together the electronics to regulate the 2nd pump.
Indeed our dme does not control 2 hpfp's.
Appreciate 0
      06-15-2016, 01:50 AM   #38
Bee Pee
Brigadier General
United Kingdom
1152
Rep
3,798
Posts

Drives: AW M2 DCT
Join Date: Jun 2010
Location: SW London

iTrader: (3)

Looking at how the m3/4 vacuum pump is configured it's similar to n55 unit but with 2 HPFP "ports" as opposed to one.


Plug in connection into vacuum body is the same part between S55 and n55 so not sure what electronics are needed to control a 2nd pump when they are driven off same drive shaft within vacuum pump body.

Both HPFP then tie into the same fuel rail so HPF sensor and regulator sees and controls rail pressure in the same way surely ?
__________________
Fettled M135i EB AT - gone but not forgotten:
AW M2 DCT
Appreciate 0
      06-15-2016, 10:56 AM   #39
rwalker
Major
United_States
296
Rep
1,085
Posts

Drives: the wheels off
Join Date: Nov 2006
Location: San Diego, CA

iTrader: (1)

a picture is worth a thousand words:
http://www.atasoyotomotiv.net/image/...OR-800x680.jpg

the shot above illustrates that the pump has an electrical connection for regulation

on the S55, the pumps are regulated separately, and one is secondary, engaged sequentially by the DME

more pics: https://www.google.com/imghp?hl=en&q=bosch+hdp+5
__________________
rwalker@rwalker.com (I really dislike Private Messaging)

Last edited by rwalker; 06-15-2016 at 12:45 PM..
Appreciate 0
      06-16-2016, 02:44 AM   #40
Bee Pee
Brigadier General
United Kingdom
1152
Rep
3,798
Posts

Drives: AW M2 DCT
Join Date: Jun 2010
Location: SW London

iTrader: (3)

RW,

Good info, Thanks. Sounds like it could be a right royal PITA to do any upgrade using OEM parts.

BP
__________________
Fettled M135i EB AT - gone but not forgotten:
AW M2 DCT
Appreciate 0
      06-17-2016, 02:02 PM   #41
Anas M235i
Enlisted Member
Anas M235i's Avatar
Saudi Arabia
7
Rep
39
Posts

Drives: Alpine white, Coral red M235i
Join Date: Dec 2014
Location: Al-Khobar , Saudi Arabia

iTrader: (0)

Quote:
Originally Posted by Bee Pee View Post
RW,

Good info, Thanks. Sounds like it could be a right royal PITA to do any upgrade using OEM parts.

BP
So the question still is in the air ..... how come there is no aftermarket products out there that replace the hpfp with higher out put one??

You see for me and i'm sure for alot of guys we dont have access to ethanol or bio fuel at all. So we NEED THIS SO BAAD lol
Appreciate 0
      06-17-2016, 02:05 PM   #42
rwalker
Major
United_States
296
Rep
1,085
Posts

Drives: the wheels off
Join Date: Nov 2006
Location: San Diego, CA

iTrader: (1)

Quote:
Originally Posted by Anas M235i View Post
So the question still is in the air ..... how come there is no aftermarket products out there that replace the hpfp with higher out put one??

You see for me and i'm sure for alot of guys we dont have access to ethanol or bio fuel at all. So we NEED THIS SO BAAD lol
because it's easier to develop and more profitable to sell upgraded LPFPs and supplemental fuel systems like PI and TBI

it's the same reason we'll never see tuners build something to let us run the S55 fuel pumps on the N55: they're flogging PI systems
__________________
rwalker@rwalker.com (I really dislike Private Messaging)
Appreciate 0
      01-04-2018, 08:11 AM   #43
Bee Pee
Brigadier General
United Kingdom
1152
Rep
3,798
Posts

Drives: AW M2 DCT
Join Date: Jun 2010
Location: SW London

iTrader: (3)

Quote:
Originally Posted by Anas M235i View Post
So the question still is in the air ..... how come there is no aftermarket products out there that replace the hpfp with higher out put one??

You see for me and i'm sure for alot of guys we dont have access to ethanol or bio fuel at all. So we NEED THIS SO BAAD lol
XDI are working on PnP upgrades for F series N55, S55 etc...

http://www.xtreme-di.com/index_files/HPFP35.htm
__________________
Fettled M135i EB AT - gone but not forgotten:
AW M2 DCT
Appreciate 0
      01-04-2018, 11:33 AM   #44
MadOzodi
Second Lieutenant
United_States
53
Rep
191
Posts

Drives: '14 EBII M235i
Join Date: May 2017
Location: MidWest

iTrader: (0)

The HPFP on my previous car was also cam driven (aka CDFP; I don't know if there are any non-cam driven fuel pumps). If you were mechanically inclined, you could easily swap out the OEM internals of the pump for upgraded internals (<$500, iirc) allowing higher sustained flow/pressures.

It's too bad such an option doesn't seem readily available for us.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 04:25 PM.




2addicts
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST