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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 down pipe removal



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      03-16-2011, 03:04 PM   #1
Keik E92 M3
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N55 down pipe removal

This thing is a pain in the ass... I cannot seem to be able to reach the 02 sensors let alone the mounts holding it up... Is there a easier way to do this?
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      03-16-2011, 03:06 PM   #2
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u don't have extensions?
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      03-16-2011, 03:18 PM   #3
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go from up top - unhook the mount/clip - give u some slack for the O2 sensors.
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      03-16-2011, 04:02 PM   #4
Keik E92 M3
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So go from the top of the engine bay ... That will include disconnecting the stock intake pipe correct? I am going to take that.

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Originally Posted by jjurroz View Post
u don't have extensions?
Yes i do.
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      03-16-2011, 04:24 PM   #5
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Quote:
Originally Posted by keikdasneak View Post
So go from the top of the engine bay ... That will include disconnecting the stock intake pipe correct? I am going to take that.



Yes i do.

no no.
u go from the bottom for sure.
there is no easier way, unless u have a lift.
if u're laying down u got go all the way up on that
bitch to get to the clamp. just reach up and muscle it

i thought u were having problems with the O2 sensor
have u removed the clamp yet?
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Last edited by FrankiE90; 03-16-2011 at 04:32 PM.
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      03-16-2011, 04:28 PM   #6
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here's a pict.
where u having problems?

Name:  Picture 1.png
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edit--
also look at black e thread for downpipes.
http://www.1addicts.com/forums/showt...t=n55+downpipe


remove the bracket nut, then remove the dual exhaust bolts.
then go for the clamp.
once u get the clamp off, something it comes off easy - but
u got to muscle it to open.
then pull off the DP - you'll notice the mid bracket will hold it up til u
slide it off.
at that point remove the O2 sensors.
remember those steps.
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      03-16-2011, 04:28 PM   #7
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Yes I removed the 4 bolts connecting to the exhaust and removed 2 other bolts connecting to the dp to the brace and loosened the clamp to the turbo and this thing still isn't moving
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      03-16-2011, 04:52 PM   #8
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Quote:
Originally Posted by keikdasneak View Post
Yes I removed the 4 bolts connecting to the exhaust and removed 2 other bolts connecting to the dp to the brace and loosened the clamp to the turbo and this thing still isn't moving
u need to remove the clamp.
it wont come off til u do that.
the clamp, use flat head, something to lift the clamp
from where it's bolted on.
that clamp is wrap'd around the edges of that DP.

get that and it'll be off.
when u put on the new DP make sure it's
a tight fit and the clamp is on properly.

just have the clamp hanging half ways off the
fitting when u slide in the new DP. the dp should lock on.
and then close the clamp and bolt on. it'll help if u have
2nd pair of hands to hold the other end. well maybe not.
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      03-16-2011, 04:52 PM   #9
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Quote:
Originally Posted by keikdasneak View Post
Yes I removed the 4 bolts connecting to the exhaust and removed 2 other bolts connecting to the dp to the brace and loosened the clamp to the turbo and this thing still isn't moving
Jesus... Did the instructions from Robert not help you either?
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      03-16-2011, 05:02 PM   #10
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The clamp is half off the other side is acting like it has super glue on it it's pissing me off the bolt is completely off and half of the clamp is off the turbo and down pipe but the other half is stuck grrrr
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      03-16-2011, 05:04 PM   #11
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Quote:
Originally Posted by Sloppy View Post
Jesus... Did the instructions from Robert not help you either?
Afriad not lol... I have everything off except the sensors and half of the clamp it's a tight fit, I have huge hands.
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      03-16-2011, 05:18 PM   #12
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Okay got the clamp off, now just the 02sensors.
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      03-16-2011, 05:18 PM   #13
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That sux dude... Hope you have somebody to help. At least I'll have my brother and a lift
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      03-16-2011, 05:29 PM   #14
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I am all by myself wih jack stands I can't get this o2 sensor off.


Worst car i have ever worked underneath EVER! lol...

I installed turbo kits etc and this is killing me... 02 sensor removal is giving me a pain in the ass now.

Last edited by Keik E92 M3; 03-16-2011 at 05:51 PM.
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      03-16-2011, 06:14 PM   #15
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Quote:
Originally Posted by keikdasneak View Post
I am all by myself wih jack stands I can't get this o2 sensor off.


Worst car i have ever worked underneath EVER! lol...

I installed turbo kits etc and this is killing me... 02 sensor removal is giving me a pain in the ass now.
is the clamp off?

ur almost there. just sucks with jack stands in this case


if the O2 sensor is lose and u need to twist it off.
follow that line up and unhook off the holder -
should give u some slack to twist off the senor.
edit - twist the wire with the sensor too.
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      03-16-2011, 06:20 PM   #16
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Lol be happy you aren't working on the n54. Then you'd have double he trouble...
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      03-16-2011, 06:22 PM   #17
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Careful with the O2 sensor as they are a lil sensitive
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      03-16-2011, 06:25 PM   #18
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I haven't even loosened them yet... The DP is just hanging i took a 20 min break to regain some strength.
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      03-16-2011, 06:33 PM   #19
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Check your PM.
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      03-16-2011, 06:48 PM   #20
Keik E92 M3
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I do not see how people who removed there DP got these damn sensors off in such a small area.. This thing is not budging no matter how more force i apply..
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      03-16-2011, 06:49 PM   #21
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Quote:
Originally Posted by keikdasneak View Post
I haven't even loosened them yet... The DP is just hanging i took a 20 min break to regain some strength.
open end wrench (forgot size 14 / 17?) for the sensors.

You'll be able to hand turn them off once u break them loose with the wrench.
It'll get easier.
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      03-16-2011, 06:52 PM   #22
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Oh man, I'm going to be attempting this on Sat. Any pointers you can give me before I get started? All the other threads are for N54 DP, and I just assumed N55 was going to be a little easier due to the "extra" space.
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