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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N55 Turbo Engine / Drivetrain / Exhaust Modifications > *** bootmod3 *** XDI Fuel Pump (HPFP) Support - Now Available!
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      11-28-2018, 03:32 PM   #1
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Thumbs up *** bootmod3 *** XDI Fuel Pump (HPFP) Support - Now Available!

Hey guys, over the past year we've worked with a number of customers and shops that chose the XDI's high flow pump as their HPFP upgrade. They have two versions available, the XDI-35 and the XDI-60, both of which outflow the OEM HPFP pump on the N55.

As of now any bootmod3 user looking to go with an XDI HPFP upgrade can go into any of their maps (custom or OTS), use the map configuration screen and choose the appropriate pump from a dropdown of options, screenshot attached.

Note that simply installing one of these pumps and not making the changes will end up setting the car into limp mode (Drivetrain Malfunction) as well as throw various codes for fuel pressure so a map change is required to run them.

For all questions related to the pumps please direct them at TTFS (TuningTechFS) who have done a great deal of work with XDI to make this upgrade happen when it comes to fitment and R&D and they're best to answer any questions. We're simply adding software support for the pumps to make the solution as Plug'n'Play as possible. We have seen a considerable improvement over the stock N55 pump on an M2 while tuning with TTFS end of last year and more recently on an N55 PWG car (both come with the same OEM HPFP pump).

Here's a log of the N55-PWG car running the XDI-35 pump. As you can see there's no pressure drop at the HPFP

XDI-35 HPFP on OTS 2H map, Pure Stage 2 turbo PWG car (no HPFP drop outside of traction loss event at around 3900rpm):
http://www.bootmod3.net/log?id=5bcf486cd10b435a2d3651ce

OEM HPFP on OTS 2H map, Pure Stage 2 turbo PWG car (400-500psi HPFP drop):
http://services.bootmod3.net/log?id=...0b4365a7303ff0

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Last edited by proTUNING Freaks; 11-28-2018 at 04:29 PM..
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      11-28-2018, 04:05 PM   #2
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      11-28-2018, 06:02 PM   #3
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That great! would anyone happen to have a link as to where i can buy one? The XDI website isn't too clear as to which hpfp is for the N55. The ones on their website are listed for GM, Audi and Fords. Thanks in advance guys haha
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      11-28-2018, 06:04 PM   #4
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Great times to be alive for the N55 guys !
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      11-28-2018, 06:05 PM   #5
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Originally Posted by f22_shayan View Post
That great! would anyone happen to have a link as to where i can buy one? The XDI website isn't too clear as to which hpfp is for the N55. The ones on their website are listed for GM, Audi and Fords. Thanks in advance guys haha
F30_SixSpeed is the leading guy for N55 XDI Pump + BM3 right now
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      11-28-2018, 06:55 PM   #6
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God forbid TTFS would put it on their website for sale...only the $6,000 S55 System.

Then again, they do not have a F3x Category either.
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      11-28-2018, 07:39 PM   #7
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Originally Posted by FSociety View Post
F30_SixSpeed is the leading guy for N55 XDI Pump + BM3 right now
Agreed....anxiously following his "Build Thread" ..

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      11-28-2018, 08:18 PM   #8
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Quote:
Originally Posted by IK6SPEED View Post
God forbid TTFS would put it on their website for sale...only the $6,000 S55 System.

Then again, they do not have a F3x Category either.
http://tuningtechfs.com/ttfs-n55-hig...p-single-pump/

http://tuningtechfs.com/shop/bmw/bmw-2-3-4-series/

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      11-28-2018, 08:41 PM   #9
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Quote:
Originally Posted by dr.roro View Post
Quote:
Originally Posted by IK6SPEED View Post
God forbid TTFS would put it on their website for sale...only the $6,000 S55 System.

Then again, they do not have a F3x Category either.
http://tuningtechfs.com/ttfs-n55-hig...p-single-pump/

http://tuningtechfs.com/shop/bmw/bmw-2-3-4-series/

Great if you have it bookmarked...

No F3x links as shown below..

And search is barren for it as well.

Then again, the link you provided has no info on the XDI-HPFP-60
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      11-28-2018, 08:53 PM   #10
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At what point does HPFP upgrade become necessary? Is this only needed for big turbos? Should LPFP be upgraded at same time?
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      11-28-2018, 08:57 PM   #11
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Quote:
Originally Posted by dr.roro View Post
At what point does HPFP upgrade become necessary? Is this only needed for big turbos? Should LPFP be upgraded at same time?
Yes and Yes...alternative option to PI without the need for external controllers. Upgrade HPFP can be integrated into your tune.

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      11-28-2018, 08:58 PM   #12
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Is the featured PWG car work in progress? A pump upgrade with those relatively low boost levels make little sense.

Who is tuning the car?
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      11-28-2018, 09:03 PM   #13
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Quote:
Originally Posted by harkes View Post
Is the featured PWG car work in progress? A pump upgrade with those relatively low boost levels make little sense.

Who is tuning the car?

Uhmmmmmm....the people who created this post...

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      11-28-2018, 09:13 PM   #14
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Quote:
Originally Posted by dr.roro View Post
At what point does HPFP upgrade become necessary? Is this only needed for big turbos? Should LPFP be upgraded at same time?
Depend primarily on whether your car is PWG or EWG. The early PWG HPFP seems stronger than the later EWG. I would say around 16psi.
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      11-28-2018, 09:18 PM   #15
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Quote:
Originally Posted by harkes View Post
Is the featured PWG car work in progress? A pump upgrade with those relatively low boost levels make little sense.

Who is tuning the car?
I think you are missing the main point. The main point being their is bottleneck when at a certain power level for N55s... specifically the HPFP on PS2 or a similar larger turbo past 16-17+ psi (even stock EWG turbos can show the limits of the HPFP)... there is a little variance in my examples so no need to quote me, just using general boost figures while commanding a safe AFR.

Just for your information - These upgraded pumps can handle 20+ psi of boost on a typical PS2 setup if the octane supports it
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      11-28-2018, 09:42 PM   #16
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Quote:
Originally Posted by harkes View Post
Depend primarily on whether your car is PWG or EWG. The early PWG HPFP seems stronger than the later EWG. I would say around 16psi.
Are you sleep-typing? LOL :P

The PWG HPFP is not stronger (more myth than truth) the thing is the PWG turbo is smaller than EWG haha.
For ex. N63TU turbo is smaller so it shows HPFP handle more fueling than S63TU (same pump but bigger turbo) runs out of fuel faster.

Quote:
Originally Posted by F30_SixSpeed View Post
I think you are missing the main point. The main point being their is bottleneck when at a certain power level for N55s... specifically the HPFP on PS2 or a similar larger turbo past 16-17+ psi (even stock EWG turbos can show the limits of the HPFP)... there is a little variance in my examples so no need to quote me, just using general boost figures while commanding a safe AFR.

Just for your information - These upgraded pumps can handle 20+ psi of boost on a typical PS2 setup if the octane supports it
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Last edited by FSociety; 11-28-2018 at 11:01 PM..
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      11-28-2018, 11:35 PM   #17
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Quote:
Originally Posted by F30_SixSpeed View Post
I think you are missing the main point. The main point being their is bottleneck when at a certain power level for N55s... specifically the HPFP on PS2 or a similar larger turbo past 16-17+ psi (even stock EWG turbos can show the limits of the HPFP)... there is a little variance in my examples so no need to quote me, just using general boost figures while commanding a safe AFR.

Just for your information - These upgraded pumps can handle 20+ psi of boost on a typical PS2 setup if the octane supports it
Information like that I would like to see instead of ~15psi that the stock pump can also support. Where did you see the XDI supporting 20psi?
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      11-29-2018, 03:34 AM   #18
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Quote:
Originally Posted by harkes View Post
Depend primarily on whether your car is PWG or EWG. The early PWG HPFP seems stronger than the later EWG. I would say around 16psi.
please guys, before declaring fake statements just check bmw parts catalogue ok? EARLY N55s (until ~2011-2012 mainly E series and some first F10) had 1:1 pump like N54 (siemens type), so yes it's way stronger. All F30/F20/F22 pumps are "new" design bosch type, same part number for year 2012 pwg or year 2015 ewg. period. please stop speculating this topic.
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      11-29-2018, 03:42 AM   #19
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Quote:
Originally Posted by enemigo13 View Post
please guys, before declaring fake statements just check bmw parts catalogue ok? EARLY N55s (until ~2011-2012 mainly E series and some first F10) had 1:1 pump like N54 (siemens type), so yes it's way stronger. All F30/F20/F22 pumps are "new" design bosch type, same part number for year 2012 pwg or year 2015 ewg. period. please stop speculating this topic.
Thanks for clarifying. The only grounds I have for saying this are the discussion on mainly N54tech.com.
And yes, a stock EWG at same boost would make more HP compared to a PWG hence demanding more fuel. Maybe that is the cause for this theory..?
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      11-29-2018, 06:36 AM   #20
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Originally Posted by harkes View Post
Thanks for clarifying. The only grounds I have for saying this are the discussion on mainly N54tech.com.
And yes, a stock EWG at same boost would make more HP compared to a PWG hence demanding more fuel. Maybe that is the cause for this theory..?
TURBO is bigger in EWG, DP is 4" vs PWG 3.5" !!!!!
Same HPFP hence why EWG runs out of fuel quicker!
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      11-29-2018, 07:29 AM   #21
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I want to see numbers that justify the cost of the pump. I would like to see it handle full e85

Last edited by Martin.328; 11-29-2018 at 07:35 AM..
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      11-29-2018, 07:34 AM   #22
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Quote:
Originally Posted by Martin.328 View Post
I just think its funny that they are pushing only 11psi of boost. I want to see numbers that justify the cost of the pump. I would like to see it handle full e85
The big pump can handle full e85 with no issues.
I'm happy that now people will see how much more they can get out of their cars. Hopefully, they don't break other parts in the process.
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