Exhaust Diameter 128i - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)

i128 · 03-07-2013, 11:37 AM

Anyone know the OEM exhaust piping diameter?

someone told me it was 2.25, is this accurate?

Thanks,

youngdoc1 · 03-07-2013, 01:47 PM

http://www.1addicts.com/forums/showthread.php?t=722393

^^They discuss stock vs. upgraded exhaust diameters in this thread.

i128 · 03-07-2013, 02:54 PM

Quote:

Originally Posted by youngdoc1

http://www.1addicts.com/forums/showthread.php?t=722393

^^They discuss stock vs. upgraded exhaust diameters in this thread.

Thanks, but they only seem to speak of the 135i and the 130.

surely I know that the 135i has a larger pipe...

is the 130's exhaust diameter identical to the 128i's ?

NoirthernDancer · 03-07-2013, 04:32 PM

someone will chime in here. My 128 is buried in garage underneath car cover for a few more weeks.

andrey_gta · 03-07-2013, 06:49 PM

Look up Super Sprint exhaust on their website for 125i, they have measurements for the twin pipes & the single rear pipe.

I posted them in the No Love thread or the No regrets thread.
I think it was 50 mm and 70mm

maupineda · 03-07-2013, 07:10 PM

I have a 130i, and the rear portion is for sure 2.5in. I think that is one of the differences with the 125/128i. Looks like the 130i shares exhaust dimensions with the 135i.

Killswitch · 03-07-2013, 08:01 PM

it's definitely a small diameter piping 2.25 sounds very close to what i remember what the exhaust guys were telling me when they were ordering piping for my car. If I have time i'll left and measure and let u know.

i128 · 03-08-2013, 10:21 AM

Thanks for looking into it guys...

reason i'm asking is because im working on a retrofit, but need a temporary solution.

hence need to know the exact diameter before ordering parts.

03-07-2013, 11:37 AM	#1
i128 4308fjios!@ Drives: car Join Date: Apr 2011 Location: Montreal Posts: 194 iTrader: (0)	Exhaust Diameter 128i Anyone know the OEM exhaust piping diameter? someone told me it was 2.25, is this accurate? Thanks,
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03-07-2013, 04:32 PM	#4
NoirthernDancer Second Lieutenant Drives: 325iX & 128 Join Date: Apr 2011 Location: Ottawa On Canada Posts: 235 iTrader: (2)	Hopefully someone will chime in here. My 128 is buried in garage underneath car cover for a few more weeks.

03-07-2013, 06:49 PM	#5
andrey_gta Lieutenant Colonel Drives: 130i coupé ;) Join Date: Nov 2011 Location: Bimmerpost Posts: 1,790 iTrader: (1) Garage List 2008 BMW 128i [0.00]	Look up Super Sprint exhaust on their website for 125i, they have measurements for the twin pipes & the single rear pipe. I posted them in the No Love thread or the No regrets thread. I think it was 50 mm and 70mm __________________ 128i Sport 6MT converted to Euro 130i spec, tuned by EVOLVE In-progress: Evolve tune configuration!!; custom lip, some susp. "The 1-series is the last car that BMW engineered before the Germans, as a car-making culture, fell out of love with driving." - R&T 2013 135is Review

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03-07-2013, 01:47 PM	#2
youngdoc1 New Member Drives: 2009 128i Join Date: Jan 2012 Location: Ontario, Canada Posts: 22 iTrader: (0)	http://www.1addicts.com/forums/showthread.php?t=722393 ^^They discuss stock vs. upgraded exhaust diameters in this thread.

03-07-2013, 07:10 PM	#6
maupineda Private First Class Drives: E87 130i Join Date: Jul 2012 Location: Mexico City Posts: 186 iTrader: (0)	I have a 130i, and the rear portion is for sure 2.5in. I think that is one of the differences with the 125/128i. Looks like the 130i shares exhaust dimensions with the 135i.

03-07-2013, 08:01 PM	#7
Killswitch aka Nemco Drives: A Car Join Date: Dec 2010 Location: Houston Posts: 165 iTrader: (6) Garage List 2008 BMW 128i [0.00]	it's definitely a small diameter piping 2.25 sounds very close to what i remember what the exhaust guys were telling me when they were ordering piping for my car. If I have time i'll left and measure and let u know.

03-08-2013, 10:21 AM	#8
i128 4308fjios!@ Drives: car Join Date: Apr 2011 Location: Montreal Posts: 194 iTrader: (0)	Thanks for looking into it guys... reason i'm asking is because im working on a retrofit, but need a temporary solution. hence need to know the exact diameter before ordering parts.