BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
M2 Technical Topics > N55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > Bmw F series N55 HPFP upgrades

Post Reply
 
Thread Tools Search this Thread
      02-08-2020, 02:37 AM   #111
F87source
Captain
F87source's Avatar
Canada
374
Rep
965
Posts

Drives: 2017 Bmw M2 6mt
Join Date: Aug 2018
Location: Canada

iTrader: (0)

Very nice
__________________
Follow me on Instagram @f87source
Appreciate 0
      02-11-2020, 07:55 AM   #112
ZM2
Lieutenant Colonel
1060
Rep
1,688
Posts

Drives: 2017 LBB M2
Join Date: Mar 2017
Location: Baltimore

iTrader: (0)

I just ordered Dorch Stage 1 for $999. Should be plenty of flow for my needs (more than XDI-35!)

I did see some BM3 guys were having to flash twice to get the Dorch HPFP to work correctly. I’m guessing that will get sorted out before I get around to installing my pump.
Appreciate 1
Bazgab111.50

      02-11-2020, 09:46 AM   #113
Bazgab
Private First Class
United_States
112
Rep
179
Posts

Drives: 2017 BMW M2
Join Date: Jan 2017
Location: Raleigh, NC

iTrader: (0)

Just ordered my Dorch Stage II but it will probably be a month or two before I get the chance to install. Also want to get a flew other things (like flex fuel analyzer) and do everything at the same time.
__________________
:::: 2017 AW M2 ::::
BM3 Stage 2 93 Flash - Ohlins R&T Coilovers - FI Valvetronic Exhaust w/ CF tips - Remus Catted Downpipe - CTS Intake - CSF Intercooler - ER Charge Pipe - Vorshlag Camber plates - Goodridge SS braided brake lines - Ferodo DS2500 pads - Ultimate Clutch Pedal - Rogue Engineering SSK
Appreciate 1
ZM21059.50

      02-11-2020, 11:38 AM   #114
Anthony1s
Lieutenant Colonel
1130
Rep
1,709
Posts

Drives: 2018 Mineral Grey M2
Join Date: Oct 2017
Location: Pennsylvania

iTrader: (0)



Anyone know why the Dorch number don't match?

What I mean is, on the N55 page it shows the Stock B58 pump doing 0.897cc/rev. but on the B58 pump page it shows the same pump doing 0.954cc/rev

The B58TU numbers shows are confusing in the same manner.

Does the same pump on different motors give different amounts of fuel flow? Why would that be? Especially since the units are given in cc/rev, it's not like the same pump can spin more on a different motor, because the rpm is static at 1 in that number. I suppose that may be the case though... that the same pump pumps more fuel on the B58 engine compared to the N55 engine as all values are roughly 6.35% higher on the B58. That's right and why?
__________________
Click "Appreciate" on my post if I was helpful. Thanks!
Appreciate 0
      02-11-2020, 11:40 AM   #115
Nezil
Major
Nezil's Avatar
991
Rep
1,314
Posts

Drives: LCI '18 6MT M2
Join Date: Jul 2017
Location: San Francisco Bay Area

iTrader: (0)

Quote:
Originally Posted by Anthony1s View Post
Does the same pump on different motors give different amounts of fuel flow? Why would that be? Especially since the units are given in cc/rev, it's not like the same pump can spin more on a different motor, because the rpm is static at 1 in that number.
Yes, exactly.... The pump is driven by a cam, pushing a plunger up and down. On the N55 the lobe on the cam is shorter than on a B58, resulting in less flow for a given RPM.
__________________
2018 ///M2 LCI, LBB, 6MT...

Current Performance Mods:
CSF FMIC, ER CP, Fabspeed Cat, Aquamist WMI, GFB DV+, NGK 97506, BM3 (Stage 2 93 OTS), CDV delete, UCP, M2C/M3/M4 Strut Brace, M3/M4 Reinforcement Rings
Appreciate 0
      02-11-2020, 11:41 AM   #116
cecaa850
Lieutenant
United_States
200
Rep
537
Posts

Drives: 2018 M2
Join Date: May 2018
Location: South East TX.

iTrader: (0)

Quote:
Originally Posted by Anthony1s View Post


Anyone know why the Dorch number don't match?

What I mean is, on the N55 page it shows the Stock B58 pump doing 0.897cc/rev. but on the B58 pump page it shows the same pump doing 0.954cc/rev

The B58TU numbers shows are confusing in the same manner.

Does the same pump on different motors give different amounts of fuel flow? Why would that be? Especially since the units are given in cc/rev, it's not like the same pump can spin more on a different motor, because the rpm is static at 1 in that number.
More lift on the cam that pushes the B58 pump. More lift = more volume.
Appreciate 0
      02-11-2020, 11:43 AM   #117
Anthony1s
Lieutenant Colonel
1130
Rep
1,709
Posts

Drives: 2018 Mineral Grey M2
Join Date: Oct 2017
Location: Pennsylvania

iTrader: (0)

Thanks. Makes sense. I wasn't considering cam height.
__________________
Click "Appreciate" on my post if I was helpful. Thanks!
Appreciate 0
      02-11-2020, 04:09 PM   #118
ZM2
Lieutenant Colonel
1060
Rep
1,688
Posts

Drives: 2017 LBB M2
Join Date: Mar 2017
Location: Baltimore

iTrader: (0)

Question: Does the HPFP replacement work make it easier to do any other normal upgrade work while we're in there?

Intake are charge pipe are the obvious, but I'm staying with the stock intake and already have the FTP charge pipe. What about spark plugs, turbo inlet pipe, GFB DV, etc? I'm having my shop do the HPFP work, but thought I'd ask.

Install instructions: https://dorchengineering.com/wp-cont...stallation.pdf
Appreciate 0
      02-11-2020, 05:03 PM   #119
Anthony1s
Lieutenant Colonel
1130
Rep
1,709
Posts

Drives: 2018 Mineral Grey M2
Join Date: Oct 2017
Location: Pennsylvania

iTrader: (0)

Quote:
Originally Posted by ZM2 View Post
Question: Does the HPFP replacement work make it easier to do any other normal upgrade work while we're in there?

Intake are charge pipe are the obvious, but I'm staying with the stock intake and already have the FTP charge pipe. What about spark plugs, turbo inlet pipe, GFB DV, etc? I'm having my shop do the HPFP work, but thought I'd ask.

Install instructions: https://dorchengineering.com/wp-cont...stallation.pdf
Replace the intake manifold with an aftermarket one or add port injection, I suppose. But doubt you or many ppl would be adding those upgrades.

Spark plugs are easy and aren't on that side of the engine. Turbo inlet pipe and diverter valve are on the other side of the engine, towards the bottom, by the turbo. So none of that is in the same area.
__________________
Click "Appreciate" on my post if I was helpful. Thanks!
Appreciate 2
ZM21059.50
tenkies33.00

      02-13-2020, 08:18 AM   #120
ZM2
Lieutenant Colonel
1060
Rep
1,688
Posts

Drives: 2017 LBB M2
Join Date: Mar 2017
Location: Baltimore

iTrader: (0)

Hey guys, a couple more questions if you don’t mind:

One reason I’m upgrading is so I can run a higher Emix year round and I don’t have to worry about HPFP drop outs when temps go below 60F.

Are there any issues with running E45 year round if I only drive my car a couple times a week? What about if it’s been sitting outside when temps get below 30F?

Regarding tune, would you expect the car to make any more power on the BM3 Stg 2 E30 map just by adding ethanol to E45?

If not, any recommendations on the cheapest/easiest path to a custom tune that will add power in the meantime, before upgrading my Dinan turbo to a PS2 or something else?

Thanks.
Appreciate 0
      02-13-2020, 11:46 AM   #121
ZM2
Lieutenant Colonel
1060
Rep
1,688
Posts

Drives: 2017 LBB M2
Join Date: Mar 2017
Location: Baltimore

iTrader: (0)

Quote:
Originally Posted by ZM2 View Post
Hey guys, a couple more questions if you donít mind:

One reason Iím upgrading is so I can run a higher Emix year round and I donít have to worry about HPFP drop outs when temps go below 60F.

Are there any issues with running E45 year round if I only drive my car a couple times a week? What about if itís been sitting outside when temps get below 30F?

Regarding tune, would you expect the car to make any more power on the BM3 Stg 2 E30 map just by adding ethanol to E45?

If not, any recommendations on the cheapest/easiest path to a custom tune that will add power in the meantime, before upgrading my Dinan turbo to a PS2 or something else?

Thanks.
Getting some good input from the F30 N55 guys: https://f30.bimmerpost.com/forums/sh...589774&page=18
Appreciate 1
Anthony1s1129.50

      02-14-2020, 07:32 PM   #122
ZM2
Lieutenant Colonel
1060
Rep
1,688
Posts

Drives: 2017 LBB M2
Join Date: Mar 2017
Location: Baltimore

iTrader: (0)

HPFP can’t get here soon enough. Was getting drop outs tonight on Stg 2 93 & E10.

But it is was 27F out.
Appreciate 0
      02-14-2020, 07:33 PM   #123
F87source
Captain
F87source's Avatar
Canada
374
Rep
965
Posts

Drives: 2017 Bmw M2 6mt
Join Date: Aug 2018
Location: Canada

iTrader: (0)

Quote:
Originally Posted by ZM2 View Post
HPFP canít get here soon enough. Was getting drop outs tonight on Stg 2 93 & E10.

But it is was 27F out.
Nice, show us some install pics when it's here.
__________________
Follow me on Instagram @f87source
Appreciate 1
ZM21059.50

      02-14-2020, 07:50 PM   #124
Anthony1s
Lieutenant Colonel
1130
Rep
1,709
Posts

Drives: 2018 Mineral Grey M2
Join Date: Oct 2017
Location: Pennsylvania

iTrader: (0)

Quote:
Originally Posted by ZM2 View Post
HPFP canít get here soon enough. Was getting drop outs tonight on Stg 2 93 & E10.

But it is was 27F out.
What's the ETA? Their site says they're backed up for a few weeks, but I assume you ordered before that.
__________________
Click "Appreciate" on my post if I was helpful. Thanks!
Appreciate 1
ZM21059.50

      02-14-2020, 08:02 PM   #125
ZM2
Lieutenant Colonel
1060
Rep
1,688
Posts

Drives: 2017 LBB M2
Join Date: Mar 2017
Location: Baltimore

iTrader: (0)

Quote:
Originally Posted by Anthony1s View Post
What's the ETA? Their site says they're backed up for a few weeks, but I assume you ordered before that.
Nahh, Iím in that 2-3-week queue. So, itíll be a bit.
Appreciate 0
      02-15-2020, 09:29 AM   #126
3t3p
First Lieutenant
56
Rep
341
Posts

Drives: M2
Join Date: May 2018
Location: UK

iTrader: (0)

So is it the case in the N55 M2 engine that if the HPFP is upgraded you can run past 420hp (with FBO) without going with a meth setup?
Appreciate 0
      02-15-2020, 09:48 AM   #127
ZM2
Lieutenant Colonel
1060
Rep
1,688
Posts

Drives: 2017 LBB M2
Join Date: Mar 2017
Location: Baltimore

iTrader: (0)

Quote:
Originally Posted by 3t3p View Post
So is it the case in the N55 M2 engine that if the HPFP is upgraded you can run past 420hp (with FBO) without going with a meth setup?
I know a guy with the stock turbo & xdi 35 and he’s tuned to 425whp. But, the stock turbo runs out of steam and starts to generate a lot of heat.

I’m going to try to go a little over that mark on an E45 map with my Dinan turbo. But, I also can’t push too much bc I’m already fighting high temps on track in the summer.

Mostly, I’m tired of dealing with HPFP issues (especially in winter) and the upgrade will prevent that while giving some extra room for power.
Appreciate 0
      02-23-2020, 12:51 PM   #128
ZM2
Lieutenant Colonel
1060
Rep
1,688
Posts

Drives: 2017 LBB M2
Join Date: Mar 2017
Location: Baltimore

iTrader: (0)

Hey guys, I know it’s been mentioned in other threads but I wanted to confirm:

What spark plugs and gap are recommended for a high EMix and custom tune?

Just follow PTF’s general instructions here, or go with a different plug/gap bc of the Emix and tune?

https://bootmod3.atlassian.net/wiki/...+and+which+gap

Last edited by ZM2; 02-23-2020 at 12:58 PM..
Appreciate 0
      02-23-2020, 01:45 PM   #129
///Monika
Private First Class
United_States
57
Rep
170
Posts

Drives: '18 X3 M40i & '18 M2
Join Date: Jun 2018
Location: North America

iTrader: (0)

Weíre currently set (NGK) to .021 ...

Quote:
Originally Posted by ZM2 View Post
Hey guys, I know itís been mentioned in other threads but I wanted to confirm:

What spark plugs and gap are recommended for a high EMix and custom tune?

Just follow PTFís general instructions here, or go with a different plug/gap bc of the Emix and tune?

https://bootmod3.atlassian.net/wiki/...+and+which+gap
Appreciate 1
ZM21059.50

      02-23-2020, 02:17 PM   #130
F87source
Captain
F87source's Avatar
Canada
374
Rep
965
Posts

Drives: 2017 Bmw M2 6mt
Join Date: Aug 2018
Location: Canada

iTrader: (0)

Quote:
Originally Posted by ///Monika View Post
Weíre currently set (NGK) to .021 ...
With e85 and high boost I recommend 0.020, that's what I'm used to running back in the jb4 days.
__________________
Follow me on Instagram @f87source
Appreciate 1
ZM21059.50

      02-23-2020, 07:05 PM   #131
Nezil
Major
Nezil's Avatar
991
Rep
1,314
Posts

Drives: LCI '18 6MT M2
Join Date: Jul 2017
Location: San Francisco Bay Area

iTrader: (0)

I run 0.020 with 97506 plugs. Stock Turbo, CA 91, 93 Stage 2 OTS + Meth.

At some point I'll go with an upgraded turbo, maybe HPFP (especially since these are now not so expensive), and a custom tune.
__________________
2018 ///M2 LCI, LBB, 6MT...

Current Performance Mods:
CSF FMIC, ER CP, Fabspeed Cat, Aquamist WMI, GFB DV+, NGK 97506, BM3 (Stage 2 93 OTS), CDV delete, UCP, M2C/M3/M4 Strut Brace, M3/M4 Reinforcement Rings
Appreciate 2
F87source374.00
ZM21059.50

      02-24-2020, 05:34 PM   #132
///Monika
Private First Class
United_States
57
Rep
170
Posts

Drives: '18 X3 M40i & '18 M2
Join Date: Jun 2018
Location: North America

iTrader: (0)

Pretty sure we'll end up pulling those plugs to re gap or outright replace them with the F8S (@ .020) IF we go with the S3 turbo (fingers x'd). Hard to predict at this point. For now, the fuel upgrades happen 1st (BPM4 and S2/525 LPFP installed yesterday). Waiting patiently for the S2 HPFP (Dorch) to ship out... tap .. tap ..

Quote:
Originally Posted by F87source View Post
With e85 and high boost I recommend 0.020, that's what I'm used to running back in the jb4 days.
Appreciate 1
ZM21059.50

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 02:17 PM.




m2
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, 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