1M downpipes - free flowing downpipes ? Dealer-invisible Stage 2 tune ?

cstavaru · 06-14-2012, 04:51 PM

Hi,

Just crossed my mind this: GIAC stated that the 1M Stage 2 maps can be used with stock 1M downpipes. When I asked how is this possible (knowing that Stage 2 maps need catless downpipes), they said that the 1M downpipes are more free-flowing compared to the usual N54 downpipes. Question is, how much more free-flowing ? Do they have metallic cats, to withstand track abuse, maybe ?

In Europe a set of these cost about 980EUR ex. VAT. They don't seem to have a price listed at Tischer BMW, but the price is similar to some other aftermarket catted downpipes solutions, and lower than than catted downpipes with HJS cats.

Just an idea...for those who want dealer invisibility and a Stage 2 tune, and also for those who don't like the strong smell with catless downpipes, or for those who care about pollution

Part numbers are:

18307980403
18307980404

JDMKS · 06-14-2012, 04:54 PM

What's the part number?

cstavaru · 06-14-2012, 04:56 PM

Quote:

Originally Posted by JDMKS

What's the part number?

Edited them into the original post.

Ken_C · 06-14-2012, 11:05 PM

Subscribing. I wonder if any of the other tuners can chime in.

rader1 · 06-14-2012, 11:32 PM

IIRC Cobb says the 1M DPs will work their stage 2 and stage 2+ tunes. However, any catless DP will be cheaper and make more power.
But if you live in an emissions testing area they'll work.

scflaw · 06-15-2012, 12:20 AM

hmmm, very interesting.... somebody please try this and let us know! =D

benzy89 · 06-15-2012, 07:50 AM

Pretty neat if it's a direct swap -- Does anyone know if the 1M has it's "own" manual transmission?? Just wondering if it's an upgraded 335 trans or something purpose built.

Abenitez · 06-15-2012, 02:46 PM

Would this apply to the 335is as well? Don't they share the same style of free flowing downpipes (just asking)?
Thanks in advance.

JDMKS · 06-15-2012, 02:47 PM

Quote:

Originally Posted by Abenitez

Would this apply to the 335is as well? Don't they share the same style of free flowing downpipes (just asking)?
Thanks in advance.

cross reference part numbers on real oem

BQTuning · 06-15-2012, 03:11 PM

I just took a look at realoem.com, the same part number for the 335iS stock DPs is the same for the 335i 2008-2010 N54 cars

Before 2008 the N54 stock DPs had a difference part number

The 1M N54 Stock DP do not share the same part #

18307980403
18307980404

old account 2 · 06-16-2012, 12:50 AM

In terms of the 1M downpipes, we haven't looked extensively into the differences. They are a different part number than x35i downpipes, though. In our testing, the WGDC was lower with these downpipes over their N54 counterparts. For this reason, and the fact that many 1M owners wish to maintain a stock-like appearance, we do offer a Stage 2 1M file for those with an upgraded intercooler, but stock downpipes.

This is not to say that the 1M downpipes are ideal, as we certainly do see more gains with upgraded ones (catted or catless). Our testing simply indicates that they do flow slightly better than other N54 versions, but like I said we haven't looked into it any deeper than that.

woosh · 06-16-2012, 01:44 AM

Quote:

Originally Posted by Thomas@GIAC

In terms of the 1M downpipes, we haven't looked extensively into the differences. They are a different part number than x35i downpipes, though. In our testing, the WGDC was lower with these downpipes over their N54 counterparts. For this reason, and the fact that many 1M owners wish to maintain a stock-like appearance, we do offer a Stage 2 1M file for those with an upgraded intercooler, but stock downpipes.

This is not to say that the 1M downpipes are ideal, as we certainly do see more gains with upgraded ones (catted or catless). Our testing simply indicates that they do flow slightly better than other N54 versions, but like I said we haven't looked into it any deeper than that.

I think you guys should... a lot of people are interested in the compatibility, gains and efficiency of the 1M DP's.

boostaholic786 · 06-16-2012, 03:55 AM

Yea especially for the people that have dealerships that are shit heads about mods. These are OEM downpipes so they cant say anything about it. hmm

Lulz_M3 · 06-16-2012, 06:44 AM

Quote:

Originally Posted by boostaholic786

Yea especially for the people that have dealerships that are shit heads about mods. These are OEM downpipes so they cant say anything about it. hmm

If you guys are that worried about it, just gut the cats on oem downpipes.

cstavaru · 06-16-2012, 09:09 AM

Quote:

Originally Posted by Lulz_M3

If you guys are that worried about it, just gut the cats on oem downpipes.

You will get a Check Engine Light (when you uninstall the tune to go to the dealership).

Lulz_M3 · 06-16-2012, 04:10 PM

Quote:

Originally Posted by cstavaru

You will get a Check Engine Light (when you uninstall the tune to go to the dealership).

BMS down pipe fix.

old account 2 · 06-16-2012, 10:21 PM

If we have some free time (thing are extremely busy this time of year), we will certainly delve deeper into this. A software package utilizing the 1M downpipes could certainly have value for those looking to pass emissions.

rjwojcik · 01-09-2013, 05:18 PM

Quote:

Originally Posted by Thomas@GIAC

If we have some free time (thing are extremely busy this time of year), we will certainly delve deeper into this. A software package utilizing the 1M downpipes could certainly have value for those looking to pass emissions.

Any news... Thanks

old account 2 · 01-14-2013, 02:47 PM

Quote:

Originally Posted by rjwojcik

Any news... Thanks

No news, although I would imagine that our Stage 2 file would work fine on an N54 vehicle with 1M downpipes (they are the same file). For our higher boost files, downpipes must be upgraded.

Zombie1 · 04-21-2014, 12:35 PM

nothing ever came of this?

branabolic · 04-22-2014, 04:33 AM

Nothing ever comes of anything with GIAC. I think they are pretty much done with this platform. They said something about a higher boost stage 2 map testing like two years ago and nothing ever came of that either.

06-14-2012, 04:51 PM	#1
cstavaru Brigadier General 313 Rep 3,262 Posts Drives: 2009 335i M Sport Sedan 6MT Join Date: Aug 2008 Location: Bucharest, Romania iTrader: (0)	1M downpipes - free flowing downpipes ? Dealer-invisible Stage 2 tune ? Hi, Just crossed my mind this: GIAC stated that the 1M Stage 2 maps can be used with stock 1M downpipes. When I asked how is this possible (knowing that Stage 2 maps need catless downpipes), they said that the 1M downpipes are more free-flowing compared to the usual N54 downpipes. Question is, how much more free-flowing ? Do they have metallic cats, to withstand track abuse, maybe ? In Europe a set of these cost about 980EUR ex. VAT. They don't seem to have a price listed at Tischer BMW, but the price is similar to some other aftermarket catted downpipes solutions, and lower than than catted downpipes with HJS cats. Just an idea...for those who want dealer invisibility and a Stage 2 tune, and also for those who don't like the strong smell with catless downpipes, or for those who care about pollution Part numbers are: 18307980403 18307980404 __________________ Mods(click): Cobb + RB Turbos \| Aquamist HFS-4 Meth \| Drexler LSD \| Bilstein B12 Pro-Kit \| Custom K&N Apollo Intake \| Wagner Intercooler \| Macht Schnell Downpipes \| BMW Performance Power Kit \| BMW Performance Exhaust \| BMW Performance Short Shifter \| M3 Subframe Bushings \|
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06-14-2012, 04:54 PM	#2
JDMKS First Lieutenant 40 Rep 337 Posts Drives: Yas Marina M4 Join Date: Apr 2012 Location: Misery iTrader: (2)	What's the part number?
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06-14-2012, 11:05 PM	#4
Ken_C Private First Class 24 Rep 158 Posts Drives: 07 E92 335i Join Date: Mar 2011 Location: Austin, TX iTrader: (1)	Subscribing. I wonder if any of the other tuners can chime in. __________________
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06-14-2012, 11:32 PM	#5
rader1 Banned 70 Rep 2,197 Posts Drives: Cobb Stage 2+ 135i Join Date: Apr 2011 Location: Roanoke, VA iTrader: (0)	IIRC Cobb says the 1M DPs will work their stage 2 and stage 2+ tunes. However, any catless DP will be cheaper and make more power. But if you live in an emissions testing area they'll work.
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06-15-2012, 12:20 AM	#6
scflaw Captain 208 Rep 741 Posts Drives: M135I, Macan S, G26 i4M50 Join Date: Jan 2011 Location: HKG iTrader: (1)	hmmm, very interesting.... somebody please try this and let us know! =D
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06-15-2012, 07:50 AM	#7
benzy89 Banned 79 Rep 2,396 Posts Drives: '08 E90 335i Join Date: Jan 2012 Location: Northern NJ iTrader: (3) Garage List 2008 BMW 335i [7.50]	Pretty neat if it's a direct swap -- Does anyone know if the 1M has it's "own" manual transmission?? Just wondering if it's an upgraded 335 trans or something purpose built.
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06-15-2012, 02:46 PM	#8
Abenitez Second Lieutenant 23 Rep 197 Posts Drives: Black Sapphire E92 335is 2012 Join Date: Dec 2010 Location: Miami iTrader: (1) Garage List 2012 335is [0.00]	Would this apply to the 335is as well? Don't they share the same style of free flowing downpipes (just asking)? Thanks in advance. __________________ 2012 E92 335is -M Sport Package- 19in M Rims- Black Sapphire Metallic/ Coral Red / Glaciar trim, Rear diffuser. Black Grille, 5% window tint. K&N drop in Air filter. Scarlett
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06-15-2012, 03:11 PM	#10
BQTuning Banned 469 Rep 4,392 Posts Drives: 2012 Z4 sDrive35i M Sport 6MT Join Date: Nov 2010 Location: bq@bqtuning.com iTrader: (0)	I just took a look at realoem.com, the same part number for the 335iS stock DPs is the same for the 335i 2008-2010 N54 cars Before 2008 the N54 stock DPs had a difference part number The 1M N54 Stock DP do not share the same part # 18307980403 18307980404
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06-16-2012, 12:50 AM	#11
old account 2 Second Lieutenant 30 Rep 283 Posts Drives: Stage 3 B5 S4, C5 Z06 Join Date: May 2012 Location: CA iTrader: (0)	In terms of the 1M downpipes, we haven't looked extensively into the differences. They are a different part number than x35i downpipes, though. In our testing, the WGDC was lower with these downpipes over their N54 counterparts. For this reason, and the fact that many 1M owners wish to maintain a stock-like appearance, we do offer a Stage 2 1M file for those with an upgraded intercooler, but stock downpipes. This is not to say that the 1M downpipes are ideal, as we certainly do see more gains with upgraded ones (catted or catless). Our testing simply indicates that they do flow slightly better than other N54 versions, but like I said we haven't looked into it any deeper than that.
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06-16-2012, 03:55 AM	#13
boostaholic786 Captain 40 Rep 623 Posts Drives: E92 N54 with MHD Custom flash Join Date: Dec 2011 Location: Plano TX iTrader: (0)	Yea especially for the people that have dealerships that are shit heads about mods. These are OEM downpipes so they cant say anything about it. hmm __________________ [SIZE="2"]Crimson Red E92 335i M-sport 6-speed with MHD custom stage 2+ flash only , 40% E85/93 mix,+ HRE P40S wheels, KW Clubsport, M3 sways,+BMW performance CF Mirrors, BMW Performance CF deck lid spoiler,+ CF interior trim, p3 vent boost gauge,+ LUX angel eyes (11.73@124mph on street tires)
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06-16-2012, 10:21 PM	#17
old account 2 Second Lieutenant 30 Rep 283 Posts Drives: Stage 3 B5 S4, C5 Z06 Join Date: May 2012 Location: CA iTrader: (0)	If we have some free time (thing are extremely busy this time of year), we will certainly delve deeper into this. A software package utilizing the 1M downpipes could certainly have value for those looking to pass emissions.
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04-21-2014, 12:35 PM	#20
Zombie1 Colonel 172 Rep 2,347 Posts Drives: BMW 135i 2010 Join Date: Jul 2012 Location: Island long iTrader: (6)	nothing ever came of this? __________________ Mods:-Berkexhaust -alpinaB3flash -CobbAP -Cobb FMIC -ER charge pipe tialQ bov -M3 front sway bar -M3 subframe bushings -M3 front upper and lower control arms -M3 guide rods -M3 rear upper control arms -Mfactory LSD -defiv lockdown kit -TC Kline SA coilovers /camber plates- HP rear toe arms
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04-22-2014, 04:33 AM	#21
branabolic Major 24 Rep 1,037 Posts Drives: e92 335i Join Date: Apr 2008 Location: so. new hampshire iTrader: (5)	Nothing ever comes of anything with GIAC. I think they are pretty much done with this platform. They said something about a higher boost stage 2 map testing like two years ago and nothing ever came of that either.
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