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 Cts turbo f-series bmw n55 boss turbo upgrade

Post Reply
 
Thread Tools Search this Thread
      04-02-2024, 05:30 PM   #133
Dee235
New Member
Dee235's Avatar
8
Rep
26
Posts

Drives: Bmw M235i
Join Date: May 2023
Location: New York

iTrader: (0)

Quote:
Originally Posted by AmuroRay View Post
Why PI when a hpfp is easier and better.
Its really not when you start trying to make real power. When you break down the costs, going CNC intake manifold with PI is the better route. Our fuel systems are limited when you start getting into the higher numbers. Youíre going to need lift kits and that still doesnít guarantee you wonít have fuel pressure dropping etc
Appreciate 1
      04-02-2024, 06:16 PM   #134
AmuroRay
Brigadier General
AmuroRay's Avatar
2232
Rep
4,125
Posts

Drives: M235i
Join Date: Aug 2019
Location: Florida

iTrader: (0)

Quote:
Originally Posted by Dee235 View Post
Its really not when you start trying to make real power. When you break down the costs, going CNC intake manifold with PI is the better route. Our fuel systems are limited when you start getting into the higher numbers. Youíre going to need lift kits and that still doesnít guarantee you wonít have fuel pressure dropping etc
I know of a guy making 700whp on this forum with a N55 on DI alone. Everyone with Port has trouble tuning it and it cost more. It's janky.
__________________
Mods: Yes.
Appreciate 1
n55david1291.00
      04-02-2024, 07:47 PM   #135
n55david
Check out my Youtube @n55david!
n55david's Avatar
United_States
1291
Rep
3,528
Posts

Drives: 2017 m240i, 2015 X3 x35i
Join Date: Aug 2018
Location: Michigan USA

iTrader: (0)

Garage List
2017 m240i xDrive  [0.00]
2015 X3 x35i  [0.00]
2015 335i xdrive  [0.00]
Quote:
Originally Posted by AmuroRay View Post
I know of a guy making 700whp on this forum with a N55 on DI alone. Everyone with Port has trouble tuning it and it cost more. It's janky.
This is correct
__________________
2017 m240i xDrive 10.99@122.86mph bootmod3 stage 2+ ots
2015 335i xDrive 10.95@124.99mph w/bm3 - SOLD
2015 X3 x35i pwg 12.96 catless w/bm3 stage 2 93 ots
IG: @n55david For pics and updates!
Youtube: @ n55david For videos or Racing etc
Appreciate 0
      04-02-2024, 08:08 PM   #136
TheSandman_M2
Private
TheSandman_M2's Avatar
68
Rep
75
Posts

Drives: 2018 M2
Join Date: Oct 2021
Location: Houston

iTrader: (0)

Quote:
Originally Posted by Dee235 View Post
Just refreshing this post

Will be introducing PI soon to this turbo build. Have had the Turbo for a year now on 23 psi with no issues. Gunna push the kit further with the PI since no one has done so yet(that Iíve seen). Iíve only been on pump gas, but will be introducing E to the car this weekend.

If it blows, Speedtech is next.
I'm running e60-e70, hits 22psi then goes down to 17psi, 15 degrees of timing. Running Stg 3 lpfp, Stg 2 hpfp, Stg 1 injectors, I think I have the hpfp maxed out though.
Appreciate 0
      04-03-2024, 07:59 AM   #137
Dee235
New Member
Dee235's Avatar
8
Rep
26
Posts

Drives: Bmw M235i
Join Date: May 2023
Location: New York

iTrader: (0)

Quote:
Originally Posted by AmuroRay View Post
I know of a guy making 700whp on this forum with a N55 on DI alone. Everyone with Port has trouble tuning it and it cost more. It's janky.
Thereís also a guy on here making that much with PI too. From what I see everyone who has issues with PI isnít using the correct controllers or using the spacer with stock manifold. Upgraded manifold with injectors angled at the ports from what Iíve seen works 100% of the time. And I donít see how it costs more. DI Injectors are almost a thousand alone. Thatís not even including Stg 2 ones thatís 1500. Hpfp + lift kit 2500

Thatís already double the cost of PI.
Appreciate 0
      04-03-2024, 08:04 AM   #138
Dee235
New Member
Dee235's Avatar
8
Rep
26
Posts

Drives: Bmw M235i
Join Date: May 2023
Location: New York

iTrader: (0)

Quote:
Originally Posted by TheSandman_M2 View Post
I'm running e60-e70, hits 22psi then goes down to 17psi, 15 degrees of timing. Running Stg 3 lpfp, Stg 2 hpfp, Stg 1 injectors, I think I have the hpfp maxed out though.
Iím 93 and im maxed out on hpfp. So I can only imagine that you are as well.
Appreciate 0
      04-08-2024, 08:47 AM   #139
VGSON
Second Lieutenant
VGSON's Avatar
181
Rep
293
Posts

Drives: F87 OGM2
Join Date: Feb 2023
Location: NC

iTrader: (0)

Quote:
Originally Posted by TheSandman_M2 View Post
I'm running e60-e70, hits 22psi then goes down to 17psi, 15 degrees of timing. Running Stg 3 lpfp, Stg 2 hpfp, Stg 1 injectors, I think I have the hpfp maxed out though.
get a liftkit instead of Port injectionÖYour setup should/will support 800ish then
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 04:38 PM.




2addicts
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, 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