1 m n55 midpipe installation - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)

hajohehe · 06-02-2012, 03:08 PM

hi guys
i live in dallas i went to a local shop to install n55 midpipe but they said they cannot because n55 midpipe does not have cats. anybody know of a place that will install do a pretty good job? i do not have proper tool to install it myself.

please recommend what i should do.

EINSER M · 06-02-2012, 03:17 PM

Quote:

Originally Posted by hajohehe

hi guys
i live in dallas i went to a local shop to install n55 midpipe but they said they cannot because n55 midpipe does not have cats. anybody know of a place that will install do a pretty good job? i do not have proper tool to install it myself.

please recommend what i should do.

go to another shop, ive heard that line before too...fools!

Dackelone · 06-02-2012, 03:21 PM

The mid pipe hold the secondary cats. But yea, some shops are afraid of getting fined by the EPA for tampering with emission devices. Find another shop or do it yourself.

hajohehe · 06-02-2012, 06:12 PM

anybody live in dallas suggest a place?

1M Tex · 06-02-2012, 07:16 PM

Autoscope.

danstel · 06-04-2012, 02:44 AM

What does changing to the n55 midpipe do? Sound? Extra hp? Can enlighten?

Aussie_in_London · 06-04-2012, 03:41 AM

Remove some of the restriction by removing the 2 secondary cats, which is a good thing for improved throttle and some performance, main gains will be main cats on the downpipes but then you will need to be mapping to change the sensor perimeters or you face the eml flashing up, otherwise with some miles now I have found it has deepened the exhaust note especially the burbles which from the outside is very noticeable.....simple and easy, looks oem and cheap to do.....

lcrain · 06-04-2012, 07:02 AM

Quote:

Originally Posted by hajohehe

anybody live in dallas suggest a place?

Autoscope will certainly do it. I am in Dallas too and am thinking of installing the pipe myself. From what I have read it is a fairly straight forward installation and at a shop like autoscope the install will run you $300+. They do great work, but for a simple bolt on I would try to do it yourself.

MDORPHN · 06-04-2012, 07:44 AM

Quote:

Originally Posted by lcrain

Autoscope will certainly do it. I am in Dallas too and am thinking of installing the pipe myself. From what I have read it is a fairly straight forward installation and at a shop like autoscope the install will run you $300+. They do great work, but for a simple bolt on I would try to do it yourself.

It's a really, really simple 45 minute job. $300 is outrageous!

Neil

Advevo · 06-04-2012, 08:09 AM

I have done it myself. If you're little handy with tools it s done in 45 min for sure.

hajohehe · 06-04-2012, 08:38 AM

300 is really high. I might use that money to buy tools. Was there a diy post for n55 midpipe installation?

Thanks

lcrain · 06-04-2012, 08:51 AM

Quote:

Originally Posted by hajohehe

300 is really high. I might use that money to buy tools. Was there a diy post for n55 midpipe installation?

Thanks

I have used Autoscope for a few things in the past and they do a great job and have a very clean facility, nothing bad to say about them. That said when I got a quote from them for $800+ installed I chuckled inside. I don't know what price they were using on the pipe but it can be had new for $360 (shipped from tischer), install it yourself and it will be one of the cheapest BMW mods ever.

Papethova · 06-04-2012, 08:52 AM

Remove 4 nuts at the DPs
Remove 1 bolt a foot or so below that on a hanger
Remove 2 bolts at the point where the axleback meets the midpipe.

You do have to remove a brace to get the pipe out. The brace has 4 bolts in the center and 2 on the ends (1 on each end).

Reverse steps to install... remove the brace before loosening the midpipe and obviously install the brace after the N55 pipe is bolted in place.

Make sure you pull the gaskets (3 total) off both ends of the original midpipe unless you are going to be using all new ones.

No one should charge more than about $100 for this.

pixelblue · 06-04-2012, 09:04 AM

how much weight shaved with the secondary cats deleted?

06-02-2012, 03:08 PM	#1
hajohehe Private Drives: Join Date: Oct 2007 Posts: 53 iTrader: (0)	1 m n55 midpipe installation hi guys i live in dallas i went to a local shop to install n55 midpipe but they said they cannot because n55 midpipe does not have cats. anybody know of a place that will install do a pretty good job? i do not have proper tool to install it myself. please recommend what i should do.
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06-02-2012, 07:16 PM	#5
1M Tex New Member Drives: 2011 BMW 1M Coupe, AW Join Date: Jul 2011 Location: Dallas, Texas, USA Posts: 28 iTrader: (0)	Autoscope. __________________ The 1 series M is the most badass, coolest, sickest BMW to debut since the 1988 M3. The E30 M3 finally has a successor. Please welcome the stupidly fast, wickedly tempered, awkwardly named, possibly perfect little son of a benchmark - Automobile Magazine, August 2011

06-04-2012, 09:04 AM	#14
pixelblue Colonel Drives: the silver bullet Join Date: Feb 2010 Location: northern virginia Posts: 2,196 iTrader: (2) Garage List 2010 135i [4.37]	how much weight shaved with the secondary cats deleted? __________________ "I would quote everything pixelblue said, but you've already read it. Take it from someone who's put the 1 through its paces"

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06-02-2012, 03:21 PM	#3
Dackelone Moderator Drives: 135i Silber mit/Rot 6MT N54 Join Date: Feb 2010 Location: Bayern, Germany Posts: 13,031 iTrader: (0)	The mid pipe hold the secondary cats. But yea, some shops are afraid of getting fined by the EPA for tampering with emission devices. Find another shop or do it yourself.

06-02-2012, 06:12 PM	#4
hajohehe Private Drives: Join Date: Oct 2007 Posts: 53 iTrader: (0)	anybody live in dallas suggest a place?

06-04-2012, 02:44 AM	#6
danstel New Member Drives: 1M Join Date: May 2012 Location: Singapore Posts: 25 iTrader: (0)	What does changing to the n55 midpipe do? Sound? Extra hp? Can enlighten?

06-04-2012, 03:41 AM	#7
Aussie_in_London Major Drives: 1M & track built Astra OPC Join Date: Apr 2011 Location: London Posts: 1,482 iTrader: (0)	Remove some of the restriction by removing the 2 secondary cats, which is a good thing for improved throttle and some performance, main gains will be main cats on the downpipes but then you will need to be mapping to change the sensor perimeters or you face the eml flashing up, otherwise with some miles now I have found it has deepened the exhaust note especially the burbles which from the outside is very noticeable.....simple and easy, looks oem and cheap to do.....

06-04-2012, 08:09 AM	#10
Advevo Captain Drives: Black 1M & White 1M Trackcar Join Date: Apr 2006 Location: Country where the taxes are too high!! Posts: 813 iTrader: (0)	I have done it myself. If you're little handy with tools it s done in 45 min for sure.

06-04-2012, 08:38 AM	#11
hajohehe Private Drives: Join Date: Oct 2007 Posts: 53 iTrader: (0)	300 is really high. I might use that money to buy tools. Was there a diy post for n55 midpipe installation? Thanks

06-04-2012, 08:52 AM	#13
Papethova Colonel Drives: '08 135/ '11 1M Join Date: Oct 2007 Location: at Death Valley 127 Posts: 2,856 iTrader: (0)	Remove 4 nuts at the DPs Remove 1 bolt a foot or so below that on a hanger Remove 2 bolts at the point where the axleback meets the midpipe. You do have to remove a brace to get the pipe out. The brace has 4 bolts in the center and 2 on the ends (1 on each end). Reverse steps to install... remove the brace before loosening the midpipe and obviously install the brace after the N55 pipe is bolted in place. Make sure you pull the gaskets (3 total) off both ends of the original midpipe unless you are going to be using all new ones. No one should charge more than about $100 for this.