E90Post
 


Bimmer Retrofit
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > N55 Downpipe DIY?



Reply
 
Thread Tools Search this Thread
      02-13-2012, 09:18 PM   #1
JcLusso
JcLusso
JcLusso's Avatar
United_States
8
Rep
216
Posts

 
Drives: 2011 BMW 335i xDrive
Join Date: Mar 2011
Location: Bethpage NY

iTrader: (1)

N55 Downpipe DIY?

Anyone know of one of these? I want to get a downpipe and install myself and was wondering if there was any guide.
__________________

Car: 2011 BMW 335i xDrive
My Websites: Exit Monitor | Boostgram | Cache Ventures
Appreciate 0
      02-13-2012, 09:19 PM   #2
Express
Major General
Express's Avatar
Israel
129
Rep
8,701
Posts

 
Drives: 06 330i
Join Date: Dec 2008
Location: The Promise Land

iTrader: (17)

Garage List
2006 BMW 330i  [4.15]
prepare to get burned. hahahahah its not that bad.. just go with it!
Appreciate 0
      02-13-2012, 10:46 PM   #3
JcLusso
JcLusso
JcLusso's Avatar
United_States
8
Rep
216
Posts

 
Drives: 2011 BMW 335i xDrive
Join Date: Mar 2011
Location: Bethpage NY

iTrader: (1)

Quote:
Originally Posted by Express View Post
prepare to get burned. hahahahah its not that bad.. just go with it!

Main thing I wanted to know were what tools I need.
__________________

Car: 2011 BMW 335i xDrive
My Websites: Exit Monitor | Boostgram | Cache Ventures
Appreciate 0
      02-13-2012, 10:50 PM   #4
eyim1988
Lieutenant Colonel
eyim1988's Avatar
United_States
22
Rep
1,528
Posts

 
Drives: 2013 335i M Sport
Join Date: Feb 2011
Location: Los Angeles, CA

iTrader: (3)

That will be one annoying install without the right tools and without a lift.
Appreciate 0
      02-13-2012, 10:52 PM   #5
Express
Major General
Express's Avatar
Israel
129
Rep
8,701
Posts

 
Drives: 06 330i
Join Date: Dec 2008
Location: The Promise Land

iTrader: (17)

Garage List
2006 BMW 330i  [4.15]
Quote:
Originally Posted by JcLusso View Post
Main thing I wanted to know were what tools I need.
you need basic socket set/ratchet. inverse torx 10mm and a couple big ones.

MAKE SURE you inplug the sensor before you remove it, and MAKE SURE you install the o2 sensor in the new downpipe BEFORE you plug it in so you dont twist the wires.

i have done many DP installs but i have a lift.. i couldn't imagine doing it without one.
Appreciate 0
      02-13-2012, 10:53 PM   #6
Express
Major General
Express's Avatar
Israel
129
Rep
8,701
Posts

 
Drives: 06 330i
Join Date: Dec 2008
Location: The Promise Land

iTrader: (17)

Garage List
2006 BMW 330i  [4.15]
a prybar helps with the turbo clamp as well. some times it is a bit stubborn
Appreciate 0
      02-14-2012, 01:29 AM   #7
N55
Major
United_States
14
Rep
1,221
Posts

 
Drives: 2012 335IS E92
Join Date: Nov 2010
Location: Pittsburgh

iTrader: (1)

Garage List
+1 on lift. It will make it much easier.
Appreciate 0
      02-14-2012, 03:54 AM   #8
reirei725
New Member
0
Rep
21
Posts

 
Drives: 335i M-Sport
Join Date: Dec 2011
Location: Miami

iTrader: (0)

http://www.1addicts.com/forums/attachment.php?attachmentid=591692&d=1318314481
Appreciate 0
      02-14-2012, 08:28 AM   #9
Slops
Major General
Slops's Avatar
South Africa
61
Rep
5,367
Posts

 
Drives: 2005 C55 AMG
Join Date: Jan 2011
Location: Oxford

iTrader: (2)

I did one, check the sticky in the dp section

http://www.e90post.com/forums/showpo...1&postcount=27
Appreciate 0
      02-14-2012, 09:49 AM   #10
JcLusso
JcLusso
JcLusso's Avatar
United_States
8
Rep
216
Posts

 
Drives: 2011 BMW 335i xDrive
Join Date: Mar 2011
Location: Bethpage NY

iTrader: (1)

Quote:
Originally Posted by Sloppy View Post
I did one, check the sticky in the dp section

http://www.e90post.com/forums/showpo...1&postcount=27
If you drop the subframe do you need an alignment after?
__________________

Car: 2011 BMW 335i xDrive
My Websites: Exit Monitor | Boostgram | Cache Ventures
Appreciate 0
      02-14-2012, 10:28 AM   #11
Slops
Major General
Slops's Avatar
South Africa
61
Rep
5,367
Posts

 
Drives: 2005 C55 AMG
Join Date: Jan 2011
Location: Oxford

iTrader: (2)

I did not have an alignment, and its been perfect... I took it to VAC and they did the same, told me to take a drive and if it pulls to the side they'll do an alignment but the car ran perfectly straight. So I can say that its not neccesary by just that much... but if you feel the car pull to the side then you should...
Appreciate 0
      02-14-2012, 01:55 PM   #12
ejazbmw
blahhh
ejazbmw's Avatar
94
Rep
6,350
Posts

 
Drives: 2011 E92 335i
Join Date: Apr 2007
Location: NJ/NY

iTrader: (7)

i wouldn't do this myself unless i actually knew what i was doing and not just following a DIY.
Appreciate 0
      02-14-2012, 01:59 PM   #13
Slops
Major General
Slops's Avatar
South Africa
61
Rep
5,367
Posts

 
Drives: 2005 C55 AMG
Join Date: Jan 2011
Location: Oxford

iTrader: (2)

Quote:
Originally Posted by ejazbmw View Post
i wouldn't do this myself unless i actually knew what i was doing and not just following a DIY.
its really not rocket science ... most importantly take care of those 02 sensors...
Appreciate 0
      02-14-2012, 02:10 PM   #14
ejazbmw
blahhh
ejazbmw's Avatar
94
Rep
6,350
Posts

 
Drives: 2011 E92 335i
Join Date: Apr 2007
Location: NJ/NY

iTrader: (7)

Quote:
Originally Posted by Sloppy View Post
its really not rocket science ... most importantly take care of those 02 sensors...
im sure its not, but if you mess up its gonna cost a whole lot more to fix rather then just bringing it to a shop in the first place. I'm all for DIY's but i leave some stuff to shops that i don't feel confident in doing myself
Appreciate 0
      02-14-2012, 02:13 PM   #15
adrock
Major
adrock's Avatar
United_States
23
Rep
1,219
Posts

 
Drives: 2014 435i
Join Date: Oct 2005
Location: SLC

iTrader: (3)

Garage List
2011 E92 335i  [4.79]
2007 E92 335i  [0.00]
Here is my order of operations along with sockets/sizes:

REMOVE
Remove Ground Covers (8mm Socket)
Loosen driver side steering rack bolt, remove passenger side (E12 Torx + 16mm (5/8in))
Remove heat shield plate (T25 Torx)
Unscrew Exhaust bolts (13mm Socket)
Unscrew Exhaust brace (E12 Torx)
Remove Tranny Mount Bracket from DP and Transmission
Unclamp VClamp (13mm Socket)
Remove O2 sensors (7/8in Wrench)

INSTALL
Attach tranny mount plate to new DP
Install O2 Sensors
For stock DP: Align DP bolts to exhaust (don’t tighten)
Install VClamp (don't use bolt)
Line up tranny mount points (put screws in, but don't' tighten)
Tighten VClamp
Tighten Transmission Bolts (14mm Socket)
Bolt Up exhaust loosely
Install Exhaust brace
Tighten Exhaust to DP
Install Heat plate
Install Steering rack bolts
Install Ground Covers


Reference
http://www.e90post.com/forums/showthread.php?t=104333

FWIW I do mine on a set of Race Ramps, and it usually takes about 3 hours.
__________________

Last edited by adrock; 02-24-2012 at 01:50 AM.
Appreciate 0
      02-15-2012, 08:21 AM   #16
Slops
Major General
Slops's Avatar
South Africa
61
Rep
5,367
Posts

 
Drives: 2005 C55 AMG
Join Date: Jan 2011
Location: Oxford

iTrader: (2)

Quote:
Originally Posted by adrock View Post
Here is my order of operations along with sockets/sizes:

REMOVE
Remove Ground Covers (8mm Socket)
Loosen driver side steering rack bolt, remove passenger side (E12 Torx + 16mm (5/8in))
Remove heat shield plate (E25 Torx)
Unscrew Exhaust bolts (13mm Socket)
Unscrew Exhaust brace (E12 Torx)
Remove Tranny Mount Bracket from DP and Transmission
Unclamp VClamp (13mm Socket)
Remove O2 sensors (7/8in Wrench)

INSTALL
Attach tranny mount plate to new DP
Install O2 Sensors
For stock DP: Align DP bolts to exhaust (donít tighten)
Install VClamp (don't use bolt)
Line up tranny mount points (put screws in, but don't' tighten)
Tighten VClamp
Tighten Transmission Bolts (14mm Socket)
Bolt Up exhaust loosely
Install Exhaust brace
Tighten Exhaust to DP
Install Heat plate
Install Steering rack bolts
Install Ground Covers


Reference
http://www.e90post.com/forums/showthread.php?t=104333

FWIW I do mine on a set of Race Ramps, and it usually takes about 3 hours.
Wow, now thats a detailed list you got there! Good job
Appreciate 0
      02-23-2012, 11:46 AM   #17
JcLusso
JcLusso
JcLusso's Avatar
United_States
8
Rep
216
Posts

 
Drives: 2011 BMW 335i xDrive
Join Date: Mar 2011
Location: Bethpage NY

iTrader: (1)

Where can you get an E25 Torx? Is that a typo? Everywhere sells E24 max
__________________

Car: 2011 BMW 335i xDrive
My Websites: Exit Monitor | Boostgram | Cache Ventures
Appreciate 0
      02-23-2012, 08:57 PM   #18
JcLusso
JcLusso
JcLusso's Avatar
United_States
8
Rep
216
Posts

 
Drives: 2011 BMW 335i xDrive
Join Date: Mar 2011
Location: Bethpage NY

iTrader: (1)

Worked out pretty well. I did snap a bolt on the stock pipe/cat. How can I get the bolt out of the pipe?

Notes to people:

Losen the rear exhaust bracket and take the O2 sensors out will the pipe is in the car. No need for subframe lowering or losening. My subframe didn't even budge when I tried losening it so I just wiggled the pipe outand use the extra room available once te downpipe was stripped of transmission mount and O2 sensors.
__________________

Car: 2011 BMW 335i xDrive
My Websites: Exit Monitor | Boostgram | Cache Ventures
Appreciate 0
      02-23-2012, 09:17 PM   #19
sA x sKy
Sameet
sA x sKy's Avatar
Bangladesh
36
Rep
1,752
Posts

 
Drives: 335xi '11 -> M4 '15
Join Date: Apr 2010
Location: Long Island, New York

iTrader: (2)

Damn jarr, you have more balls than me 10x doing the install yourself. Good stuff
Appreciate 0
      02-24-2012, 01:41 AM   #20
JcLusso
JcLusso
JcLusso's Avatar
United_States
8
Rep
216
Posts

 
Drives: 2011 BMW 335i xDrive
Join Date: Mar 2011
Location: Bethpage NY

iTrader: (1)

Quote:
Originally Posted by sA x sKy View Post
Damn jarr, you have more balls than me 10x doing the install yourself. Good stuff
Thanks! Next Up Remus Race... unfortunately I don't weld so I can't install that because I need the tips cut and shortened for the sedan since its made for the coupe

Btw, hows your car?
__________________

Car: 2011 BMW 335i xDrive
My Websites: Exit Monitor | Boostgram | Cache Ventures
Appreciate 0
      02-24-2012, 02:41 PM   #21
IancoleTX
Dillo boxers
IancoleTX's Avatar
United_States
40
Rep
3,041
Posts

 
Drives: BMW
Join Date: Jan 2010
Location: USA

iTrader: (13)

Took about 4 hours the first try. I didn't unbolt any subframes but I did scratch the unholy piss out of my hands. Not too bad if you're patient and have the right tools. GL.
__________________
2011 135i 6MT - Alpine White / Savannah Beige
Appreciate 0
      02-25-2012, 02:55 PM   #22
JcLusso
JcLusso
JcLusso's Avatar
United_States
8
Rep
216
Posts

 
Drives: 2011 BMW 335i xDrive
Join Date: Mar 2011
Location: Bethpage NY

iTrader: (1)

Quote:
Originally Posted by IancoleTX View Post
I did scratch the unholy piss out of my hands.
Same thing happened to me. Well worth it tho =). The sound and power difference is great!
__________________

Car: 2011 BMW 335i xDrive
My Websites: Exit Monitor | Boostgram | Cache Ventures
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
Forum Jump


All times are GMT -5. The time now is 06:05 PM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
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