N55 xDrive Downpipe Install

MTK24 · 03-04-2019, 02:17 AM

some cars have more rust than others so the o2 can be seized differently. My car was from New Jersey so everything was seized lol. The shop was shocked to see all the rust on the bolts that hold subframe.

TheGoodTheBadTheUgly · 03-04-2019, 02:33 AM

Quote:

Originally Posted by Vampire335i

some cars have more rust than others so the o2 can be seized differently. My car was from New Jersey so everything was seized lol. The shop was shocked to see all the rust on the bolts that hold subframe.

Well mate, up here in Canada we have some nice weather for rusting so I guess I will have some fun doing this job hahaha. Can't wait to do the PE mod on my exhaust as well and see how it sounds!

MTK24 · 03-05-2019, 12:38 AM

Quote:

Originally Posted by TheGoodTheBadTheUgly

Quote:

Originally Posted by Vampire335i

some cars have more rust than others so the o2 can be seized differently. My car was from New Jersey so everything was seized lol. The shop was shocked to see all the rust on the bolts that hold subframe.

Well mate, up here in Canada we have some nice weather for rusting so I guess I will have some fun doing this job hahaha. Can't wait to do the PE mod on my exhaust as well and see how it sounds!

I have downpipes and PE mod on x drive. Sounds great.

TheGoodTheBadTheUgly · 03-05-2019, 02:26 AM

Quote:

Originally Posted by Vampire335i

I have downpipes and PE mod on x drive. Sounds great.

I just can't wait to hear it! Will my neigbours survive?

Turbod · 03-05-2019, 02:00 PM

Quote:

Originally Posted by TheGoodTheBadTheUgly

I just can't wait to hear it! Will my neigbours survive?

If you have MHD just disable cold starts and it wont be much of an issue. I personally think the combination is too loud.

MTK24 · 03-05-2019, 08:09 PM

Here is a video of mine

N55 sounds the best. Better than N54 and better than the s55 on the m4.

TheGoodTheBadTheUgly · 03-06-2019, 03:09 PM

Quote:

Originally Posted by Vampire335i

Here is a video of mine

N55 sounds the best. Better than N54 and better than the s55 on the m4.

N55 sounds so nice overall. Nice shit man!

Jr7jaime · 03-11-2019, 06:18 AM

Quote:

Originally Posted by TheGoodTheBadTheUgly

As the title says, I am going to install downpipes for my car soon. The only problem is that's it seems to be a process that is way more hectic than on a RWD 335.

So I would like to know, preferably from people who did it on their xDrive 335 or from people who knows about the process, how to install the downpipes.

I have heard that you need to drop the subframe in order to access the downpipes mounting point. Does the whole subframe have to come off or you can just lower it a bit? Do you have to remove the steering rack?

Any details or insight is appreciated!

Did mines not too long ago and it's possible to do without dropping the subframe but it is a pita to get the turbo band off took me about 5 hours to do

The Silver Slammer · 03-11-2019, 07:54 AM

To be clear...the N55 only has ONE turbo and ONE downpipe. So in our language its incorrect to refer to something that is singular in the plural form.

1 turbo = turbo
1 downpipe = downpipe

2 turbos = turbos
2 downpipes = downpipes

There I said it. You're welcome to all those reading this thread saying "does my car have 2 turbos or 1?" or "do these guys really not know what they're talking about?"

N54 came with 2 turbos
N55 came with 1 turbo

philgli · 03-11-2019, 08:28 AM

Quote:

Originally Posted by The Silver Slammer

To be clear...the N55 only has ONE turbo and ONE downpipe. So in our language its incorrect to refer to something that is singular in the plural form.

1 turbo = turbo
1 downpipe = downpipe

2 turbos = turbos
2 downpipes = downpipes

There I said it. You're welcome to all those reading this thread saying "does my car have 2 turbos or 1?" or "do these guys really not know what they're talking about?"

N54 came with 2 turbos
N55 came with 1 turbo

Also a pet peeve of mine. "I installed downpipes on my n55..."

My xdrive n55 downpipe is about ready to go on my RWD e92 so i will be able to see if its fits. Prior owner snapped studs so those are drilled out and all cat material is removed. just need to find gaskets that aren't $30...

anyone?

The Silver Slammer · 03-11-2019, 08:47 AM

I may have my old ones. I'll check tonight.

TheGoodTheBadTheUgly · 03-11-2019, 11:09 AM

Quote:

Originally Posted by The Silver Slammer

To be clear...the N55 only has ONE turbo and ONE downpipe. So in our language its incorrect to refer to something that is singular in the plural form.

1 turbo = turbo
1 downpipe = downpipe

2 turbos = turbos
2 downpipes = downpipes

There I said it. You're welcome to all those reading this thread saying "does my car have 2 turbos or 1?" or "do these guys really not know what they're talking about?"

N54 came with 2 turbos
N55 came with 1 turbo

Yeah my mistake there Haha. Don't know why but downpipes always sounded better in the sentence but there is indeed only one downpipe.

JoshC222 · 03-11-2019, 01:56 PM

I have a 2011 e90 335ix 6MT, and I installed my downpipe on jack stands without dropping the subframe. You 100% do not need to. Maybe it's different for auto trans? I'm not sure.

Take off the pass wheel and fender liner. You work half thru there, half from underneath.

TheGoodTheBadTheUgly · 03-11-2019, 06:21 PM

Quote:

Originally Posted by JoshC222

I have a 2011 e90 335ix 6MT, and I installed my downpipe on jack stands without dropping the subframe. You 100% do not need to. Maybe it's different for auto trans? I'm not sure.

Take off the pass wheel and fender liner. You work half thru there, half from underneath.

I was thinking about giving it a quick look but now I will definitely try to work from there. Thanks a lot!

The Silver Slammer · 03-12-2019, 06:00 PM

It can be done from the wheel well. I have a buddy with an 2011 335xi e92 did it recently, he had to remove, wheel, caliper, rotor, axle, and loosen or drop a few more suspension parts, but not the subframe I know for sure. He's on the forum here, I'll see if he can get on and give you a quick DIY.

TheGoodTheBadTheUgly · 03-13-2019, 12:11 AM

Quote:

Originally Posted by The Silver Slammer

It can be done from the wheel well. I have a buddy with an 2011 335xi e92 did it recently, he had to remove, wheel, caliper, rotor, axle, and loosen or drop a few more suspension parts, but not the subframe I know for sure. He's on the forum here, I'll see if he can get on and give you a quick DIY.

Wow that would be really nice, but even with this info I get to have a bit more of an idea of what to do! Thanks a lot.

The Silver Slammer · 03-13-2019, 05:41 AM

He said it took him 7 HOURS!!! LOL! All the bolts around it were rusty as all hell. He had to cut the catalytic converter itself to get it out. The o2 sensors were rusted in the catalytic converter so bad he couldn't get them out so he's currently running o2-less. It was a car from New York. Lots of salt on the roads when it snows/ices. I'm sure you can relate up in the Great White North.

TheMidnightNarwhal · 03-13-2019, 07:38 AM

Quote:

Originally Posted by Turbod

If you have MHD just disable cold starts and it wont be much of an issue. I personally think the combination is too loud.

I asked about that and everyone told me to not remove cold starts as it's not wise even if your catless.

TheGoodTheBadTheUgly · 03-13-2019, 11:16 AM

Quote:

Originally Posted by The Silver Slammer

He said it took him 7 HOURS!!! LOL! All the bolts around it were rusty as all hell. He had to cut the catalytic converter itself to get it out. The o2 sensors were rusted in the catalytic converter so bad he couldn't get them out so he's currently running o2-less. It was a car from New York. Lots of salt on the roads when it snows/ices. I'm sure you can relate up in the Great White North.

Hahaha better start filling uo these propane tanks for the blow torch. This is going to be such a drag.

Pladi · 03-13-2019, 12:12 PM

Quote:

Originally Posted by The Silver Slammer

It can be done from the wheel well. I have a buddy with an 2011 335xi e92 did it recently, he had to remove, wheel, caliper, rotor, axle, and loosen or drop a few more suspension parts, but not the subframe I know for sure. He's on the forum here, I'll see if he can get on and give you a quick DIY.

I guess it makes sense if you remove the shock maybe and the control arms and the end link which should not be bad at all. Better than dropping sub frame u work from under the car all the time.

lwgrenier · 03-13-2019, 12:20 PM

Quote:

Originally Posted by Pladi

I guess it makes sense if you remove the shock maybe and the control arms and the end link which should not be bad at all. Better than dropping sub frame u work from under the car all the time.

You should probably get it aligned if you do all of that, right? Would you have to if you dropped the subframe to get it out? Just thinking from a $$ standpoint.

Pladi · 03-13-2019, 12:32 PM

Quote:

Originally Posted by lwgrenier

You should probably get it aligned if you do all of that, right? Would you have to if you dropped the subframe to get it out? Just thinking from a $$ standpoint.

Yes most likely. Although i heard if ur not touching the tie rod alignment is not needed but its not a bad idea.

It would add to cost yes.

03-04-2019, 02:17 AM	#23
MTK24 Lieutenant 485 Rep 599 Posts Drives: 2011 335I X Drive Join Date: Nov 2017 Location: Seattle iTrader: (0)	some cars have more rust than others so the o2 can be seized differently. My car was from New Jersey so everything was seized lol. The shop was shocked to see all the rust on the bolts that hold subframe. __________________ Vermillion Red
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03-05-2019, 08:09 PM	#28
MTK24 Lieutenant 485 Rep 599 Posts Drives: 2011 335I X Drive Join Date: Nov 2017 Location: Seattle iTrader: (0)	Here is a video of mine N55 sounds the best. Better than N54 and better than the s55 on the m4. __________________ Vermillion Red
	Appreciate 0 Quote

03-11-2019, 07:54 AM	#31
The Silver Slammer Private First Class 45 Rep 149 Posts Drives: 2011 BMW 335i E90 Join Date: Sep 2018 Location: Evans, GA iTrader: (1)	To be clear...the N55 only has ONE turbo and ONE downpipe. So in our language its incorrect to refer to something that is singular in the plural form. 1 turbo = turbo 1 downpipe = downpipe 2 turbos = turbos 2 downpipes = downpipes There I said it. You're welcome to all those reading this thread saying "does my car have 2 turbos or 1?" or "do these guys really not know what they're talking about?" N54 came with 2 turbos N55 came with 1 turbo __________________ 2011 335I, E90, AT, Sport Package, FBO, Eibach 1" Lowering Kit w/ Koni Orange. MHD, 88k miles 2nd owner - Sold 2003 330XI, MT, bone stock, 160k miles - Sold 1988 325I Coupe, MT - Retired, 280k miles - Sold 2019 X7 XDRIVE 40I - Wife's
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03-11-2019, 08:47 AM	#33
The Silver Slammer Private First Class 45 Rep 149 Posts Drives: 2011 BMW 335i E90 Join Date: Sep 2018 Location: Evans, GA iTrader: (1)	I may have my old ones. I'll check tonight. __________________ 2011 335I, E90, AT, Sport Package, FBO, Eibach 1" Lowering Kit w/ Koni Orange. MHD, 88k miles 2nd owner - Sold 2003 330XI, MT, bone stock, 160k miles - Sold 1988 325I Coupe, MT - Retired, 280k miles - Sold 2019 X7 XDRIVE 40I - Wife's
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03-11-2019, 01:56 PM	#35
JoshC222 Private 10 Rep 71 Posts Drives: E90 N55, E91 N52 Join Date: Aug 2015 Location: Ohio iTrader: (2)	I have a 2011 e90 335ix 6MT, and I installed my downpipe on jack stands without dropping the subframe. You 100% do not need to. Maybe it's different for auto trans? I'm not sure. Take off the pass wheel and fender liner. You work half thru there, half from underneath.
	Appreciate 0 Quote

03-12-2019, 06:00 PM	#37
The Silver Slammer Private First Class 45 Rep 149 Posts Drives: 2011 BMW 335i E90 Join Date: Sep 2018 Location: Evans, GA iTrader: (1)	It can be done from the wheel well. I have a buddy with an 2011 335xi e92 did it recently, he had to remove, wheel, caliper, rotor, axle, and loosen or drop a few more suspension parts, but not the subframe I know for sure. He's on the forum here, I'll see if he can get on and give you a quick DIY. __________________ 2011 335I, E90, AT, Sport Package, FBO, Eibach 1" Lowering Kit w/ Koni Orange. MHD, 88k miles 2nd owner - Sold 2003 330XI, MT, bone stock, 160k miles - Sold 1988 325I Coupe, MT - Retired, 280k miles - Sold 2019 X7 XDRIVE 40I - Wife's
	Appreciate 2 TheGoodTheBadTheUgly256.00 Pladi718.00 Quote

03-13-2019, 05:41 AM	#39
The Silver Slammer Private First Class 45 Rep 149 Posts Drives: 2011 BMW 335i E90 Join Date: Sep 2018 Location: Evans, GA iTrader: (1)	He said it took him 7 HOURS!!! LOL! All the bolts around it were rusty as all hell. He had to cut the catalytic converter itself to get it out. The o2 sensors were rusted in the catalytic converter so bad he couldn't get them out so he's currently running o2-less. It was a car from New York. Lots of salt on the roads when it snows/ices. I'm sure you can relate up in the Great White North. __________________ 2011 335I, E90, AT, Sport Package, FBO, Eibach 1" Lowering Kit w/ Koni Orange. MHD, 88k miles 2nd owner - Sold 2003 330XI, MT, bone stock, 160k miles - Sold 1988 325I Coupe, MT - Retired, 280k miles - Sold 2019 X7 XDRIVE 40I - Wife's
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