E90Post
 


 
BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > H's Mapped 325i (N53)



Reply
 
Thread Tools Search this Thread
      08-05-2021, 05:09 PM   #23
rnyassar
New Member
United Kingdom
4
Rep
12
Posts

Drives: E92 335i N55 DCT
Join Date: Jul 2021
Location: Sussex, UK

iTrader: (0)

Quote:
Originally Posted by 84Reasons View Post
That's interesting - I didn't check that either of them where working - one was bought new and the other came with the manifold when it was bought 2nd hand..that could be the issue and I may look at replacing them
I'd recommend Febi ones, Febi part numbers are 109591 (small) and 109562 (large). Replacing both just gives that extra peace of mind.
Appreciate 0
      08-06-2021, 03:57 AM   #24
84Reasons
Private
United Kingdom
5
Rep
77
Posts

Drives: E93 N53 Pre-LCI
Join Date: Apr 2019
Location: United Kingdom

iTrader: (0)

Garage List
2007 BMW E93  [0.00]
Quote:
Originally Posted by rnyassar View Post
I'd recommend Febi ones, Febi part numbers are 109591 (small) and 109562 (large). Replacing both just gives that extra peace of mind.
Thank you man will look into this. Yeah I think you are right it could be that the one I didn't replace isn't working or the other one isn't either as I just found a decently priced one.
Appreciate 0
      08-12-2021, 02:34 AM   #25
84Reasons
Private
United Kingdom
5
Rep
77
Posts

Drives: E93 N53 Pre-LCI
Join Date: Apr 2019
Location: United Kingdom

iTrader: (0)

Garage List
2007 BMW E93  [0.00]
UPDATE:

A coil pack was fried which has solved the initial misfire however it was a fairly new one that was replaced not long ago so not sure if something else is at play. Garage tested the DISA valves and looks like one of them is not working - coupled with the other being 2nd hand I've gone and bought two new Febi Bilstein ones reccomended by user: rnyassar for peace of mind.

In addition garage will do a walnut blast, never been done on the car and thought it was only needed for N54 (turbo) engines but have seen a few owners benefit for it and want it running 100% so have gone for this too. Not booked in for another few weeks so will update soon! Hopefully if it feels its running well I will get it on the dyno again see if we have freed any power up!
Appreciate 0
      08-19-2021, 09:21 AM   #26
pmorg4
Enlisted Member
United Kingdom
6
Rep
47
Posts

Drives: BMW 330i Touring
Join Date: Nov 2020
Location: Surrey, UK

iTrader: (0)

Walnut blast will benefit all direct injection engines including the N53, as oil vapours from the PCV system will lead to carbon build up. Port injection engines don't suffer this problem as the fuel going through the intake washes off the oil residue before it has a chance to solidify from the heat of the engine.
Appreciate 0
      08-19-2021, 10:00 AM   #27
0l0dom0l0
Private First Class
25
Rep
147
Posts

Drives: BMW E92 330i
Join Date: Jun 2020
Location: Uk

iTrader: (0)

I did a home walnut blast on my N53 at 35k as the valves were surprisingly caked up in gunk.

The N53 also has EGR which adds to the problem and makes the middle 3 cylinder particularly susceptible to deposit formation.
Appreciate 0
      08-19-2021, 02:22 PM   #28
84Reasons
Private
United Kingdom
5
Rep
77
Posts

Drives: E93 N53 Pre-LCI
Join Date: Apr 2019
Location: United Kingdom

iTrader: (0)

Garage List
2007 BMW E93  [0.00]
Quote:
Originally Posted by pmorg4 View Post
Walnut blast will benefit all direct injection engines including the N53, as oil vapours from the PCV system will lead to carbon build up. Port injection engines don't suffer this problem as the fuel going through the intake washes off the oil residue before it has a chance to solidify from the heat of the engine.
Brilliant,.good to know.. hopefully this will free up some.power!
Appreciate 0
      08-20-2021, 02:24 PM   #29
Phil325i
Colonel
Phil325i's Avatar
United Kingdom
454
Rep
2,888
Posts

Drives: E92 325i MSport Coupe
Join Date: Apr 2012
Location: UK South East

iTrader: (1)

Garage List
Quote:
Originally Posted by 0l0dom0l0 View Post
The N53 also has EGR which adds to the problem and makes the middle 3 cylinder particularly susceptible to deposit formation.
Therefore worth thinking about fitting a partial (but not complete) blanking plate into the EGR plumbing.
__________________
E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; 3 x chassis braces; diff brace; N53 V-brace; 034 subframe inserts; BMS clutch stop; BMS CDV; RE g/box mounts; Delrin shift bushes; Saikoumichi OCC; Cyba scoops; BMW Perf Exhaust; HEL s/steel brake hoses; M3 rear spoiler; Recaro Sportster CSs; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof/clear front
Appreciate 0
      08-23-2021, 03:20 AM   #30
84Reasons
Private
United Kingdom
5
Rep
77
Posts

Drives: E93 N53 Pre-LCI
Join Date: Apr 2019
Location: United Kingdom

iTrader: (0)

Garage List
2007 BMW E93  [0.00]
Quote:
Originally Posted by Phil325i View Post
Therefore worth thinking about fitting a partial (but not complete) blanking plate into the EGR plumbing.
I'm not clear on what this is and what it would involve?
Appreciate 0
      08-23-2021, 03:41 AM   #31
Phil325i
Colonel
Phil325i's Avatar
United Kingdom
454
Rep
2,888
Posts

Drives: E92 325i MSport Coupe
Join Date: Apr 2012
Location: UK South East

iTrader: (1)

Garage List
Quote:
Originally Posted by 84Reasons View Post
I'm not clear on what this is and what it would involve?
Insert something like this:

https://www.ebay.co.uk/itm/333855101...gAAOSwgOhf~YSw

between points 5 and 8 in this diagram:

https://www.realoem.com/bmw/enUS/sho...diagId=11_3974
__________________
E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; 3 x chassis braces; diff brace; N53 V-brace; 034 subframe inserts; BMS clutch stop; BMS CDV; RE g/box mounts; Delrin shift bushes; Saikoumichi OCC; Cyba scoops; BMW Perf Exhaust; HEL s/steel brake hoses; M3 rear spoiler; Recaro Sportster CSs; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof/clear front
Appreciate 0
      08-23-2021, 04:42 AM   #32
84Reasons
Private
United Kingdom
5
Rep
77
Posts

Drives: E93 N53 Pre-LCI
Join Date: Apr 2019
Location: United Kingdom

iTrader: (0)

Garage List
2007 BMW E93  [0.00]
Quote:
Originally Posted by Phil325i View Post
Sure, but why?
Appreciate 0
      08-23-2021, 04:15 PM   #33
Phil325i
Colonel
Phil325i's Avatar
United Kingdom
454
Rep
2,888
Posts

Drives: E92 325i MSport Coupe
Join Date: Apr 2012
Location: UK South East

iTrader: (1)

Garage List
Quote:
Originally Posted by 84Reasons View Post
Sure, but why?
The reason posted by 0l0dom0l0 in post #29 i.e. to eliminate most of the cr*p fed from the EGR back into the induction system and valves.
__________________
E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; 3 x chassis braces; diff brace; N53 V-brace; 034 subframe inserts; BMS clutch stop; BMS CDV; RE g/box mounts; Delrin shift bushes; Saikoumichi OCC; Cyba scoops; BMW Perf Exhaust; HEL s/steel brake hoses; M3 rear spoiler; Recaro Sportster CSs; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof/clear front
Appreciate 0
Reply

Bookmarks

Tags
325i, e93, n53

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 05:14 PM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, 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