E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Bosch Spark Plug - ZR5TPP33S Need to be gapped for N55?



Reply
 
Thread Tools Search this Thread
      10-21-2014, 10:26 PM   #1
Dan Villa
Private First Class
Dan Villa's Avatar
No_Country
45
Rep
184
Posts

Drives: 2020 M340i X-Drive
Join Date: Mar 2014
Location: long Island

iTrader: (1)

Garage List
2020 BMW M340   [9.75]
Bosch Spark Plug - ZR5TPP33S Need to be gapped for N55?

Looking to do some maintenance on my 335i N55 just wondering if these plugs will need to be gapped?

Thanks in advance
Dan

Last edited by Dan Villa; 10-21-2014 at 10:34 PM..
Appreciate 0
      10-22-2014, 12:53 AM   #2
drmdvl
Second Lieutenant
drmdvl's Avatar
United_States
56
Rep
271
Posts

Drives: 2015 X5 50i, 2015 Macan Turbo
Join Date: Jul 2011
Location: Northern CO

iTrader: (0)

Garage List
Nope - they are pre-gapped.
Appreciate 0
      10-22-2014, 04:22 PM   #3
Walker16
First Lieutenant
Walker16's Avatar
United_States
28
Rep
300
Posts

Drives: '11 335i
Join Date: Jun 2013
Location: Livermore, Ca

iTrader: (4)

Garage List
just curious... i orded new plugs but have not installed them yet.. they are the same part number but without the "S" on the end.. are they the same thing? doesnt seem to be any difference on the bosch website.
Appreciate 0
      10-22-2014, 10:22 PM   #4
weehe126
Brigadier General
1156
Rep
3,179
Posts

Drives: 2017 340i
Join Date: Apr 2014
Location: San Antonio

iTrader: (2)

if tuned, gap .022-.028. if stock run as they come.
Appreciate 0
      10-22-2014, 10:45 PM   #5
Dan Villa
Private First Class
Dan Villa's Avatar
No_Country
45
Rep
184
Posts

Drives: 2020 M340i X-Drive
Join Date: Mar 2014
Location: long Island

iTrader: (1)

Garage List
2020 BMW M340   [9.75]
Quote:
Originally Posted by weehe126 View Post
if tuned, gap .022-.028. if stock run as they come.
On bosch's web site they say not to gap the plugs... at least with this part #. I just found that information tonight. Maybe go with different plugs if tuned? How will changing the gap affect the motor if going back and forth from tuned and a stock tune?

Last edited by Dan Villa; 10-22-2014 at 11:16 PM..
Appreciate 0
      10-23-2014, 02:21 PM   #6
CoolHandLuke
Second Lieutenant
11
Rep
209
Posts

Drives: 2011 e92 335xi
Join Date: Sep 2013
Location: MA

iTrader: (0)

I read somewhere if tuned to not gap as the gap will widen over time.

I am completely ignorant of this so don't take my word as gospel but I say it in hopes that someone in the know can chime in and correct or confirm this.
Appreciate 0
      10-23-2014, 03:46 PM   #7
JETmn
Lieutenant Colonel
United_States
245
Rep
1,595
Posts

Drives: 2011 335i xDrive Msport
Join Date: Apr 2013
Location: Orlando

iTrader: (0)

Garage List
2011 335Xi  [0.00]
Quote:
Originally Posted by CoolHandLuke View Post
I read somewhere if tuned to not gap as the gap will widen over time.

I am completely ignorant of this so don't take my word as gospel but I say it in hopes that someone in the know can chime in and correct or confirm this.
With a tune you will want a smaller gap, not larger. Smaller gap = a more powerful spark that still works well under high boost. If you run a larger gap you can get misfires in high boost situations.
Appreciate 0
      10-23-2014, 03:49 PM   #8
CoolHandLuke
Second Lieutenant
11
Rep
209
Posts

Drives: 2011 e92 335xi
Join Date: Sep 2013
Location: MA

iTrader: (0)

Quote:
Originally Posted by JETmn View Post
With a tune you will want a smaller gap, not larger. Smaller gap = a more powerful spark that still works well under high boost. If you run a larger gap you can get misfires in high boost situations.
Right, I along with many others have experienced this when they install the tune.

#So are saying we should make the gap smaller than it comes when we purchase it?
#Or do the gaps vary in size when purchasing depending on manufacturer?
Appreciate 0
      10-23-2014, 04:02 PM   #9
JETmn
Lieutenant Colonel
United_States
245
Rep
1,595
Posts

Drives: 2011 335i xDrive Msport
Join Date: Apr 2013
Location: Orlando

iTrader: (0)

Garage List
2011 335Xi  [0.00]
Quote:
Originally Posted by CoolHandLuke View Post
Right, I along with many others have experienced this when they install the tune.

#So are saying we should make the gap smaller than it comes when we purchase it?
#Or do the gaps vary in size when purchasing depending on manufacturer?
Gaps will vary some and yes you would want to make the gap smaller than they come. I would shoot for .026-.028" for just a tune.

That said I am CPO and have been running 18+psi on stock plugs with no problems. If I was changing them myself I would tighten the gap slightly.
Appreciate 0
      10-23-2014, 06:11 PM   #10
MegaModder
Go Aggressive
MegaModder's Avatar
1
Rep
34
Posts

Drives: 2011 335i M-Sport Cobb/Alpina
Join Date: Jul 2014
Location: Northern Virginia

iTrader: (0)

Garage List
I'm in a similar boat, ready to do plugs at 35K miles and I like Bosch platinum plugs but are these ZR5TPP33S the best plugs to go with or are the ZGR6STE2 I've seen posted here a better choice? I'm almost stock, just a Cobb AP3 (aggressive, 93 octane) and a high-flow panel filter. Runs great!
Appreciate 0
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 09:10 AM.




e90post
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