Cutting Out Secondary Cats Piping Size

rod.bearings · 04-09-2015, 05:21 PM

Does anyone know the exact piping of stock mid pipe?
I heard its 2.25 but not sure

I'm planning to cut the cats out and was wondering if bigger piping like 2.5" would be okay? Cuz idk if the shop I'm going to has any 2.25"

rod.bearings · 04-29-2015, 08:05 PM

bump!

Rob.K · 04-30-2015, 06:06 AM

Talk to Trevor at ABC Muffler on 50th. He'll help ya out

Dackelone · 04-30-2015, 07:02 AM

The OD on the mid pipes is 68mm.

See post #21...

DIY installing N55 mid pipes on a N54...
http://www.1addicts.com/forums/showthread.php?t=797160

04-09-2015, 05:21 PM	#1
rod.bearings Lieutenant 123 Rep 546 Posts Drives: E92 M3 Join Date: Dec 2013 Location: Alberta iTrader: (3) Garage List 2009 BMW 135i [0.00]	Cutting Out Secondary Cats Piping Size Does anyone know the exact piping of stock mid pipe? I heard its 2.25 but not sure I'm planning to cut the cats out and was wondering if bigger piping like 2.5" would be okay? Cuz idk if the shop I'm going to has any 2.25" __________________ 2011 E92 M3 AW DCT IG - rod.bearings
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04-30-2015, 06:06 AM	#3
Rob.K Private First Class 92 Rep 181 Posts Drives: 08 135i, 08 4.8i X5 Join Date: Aug 2010 Location: Edmonton, AB iTrader: (3)	Talk to Trevor at ABC Muffler on 50th. He'll help ya out __________________ 2008 135i 6MT \| - Current 2007 335xi AT \| 12.1@117 - Sold
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04-30-2015, 07:02 AM	#4
Dackelone European Editor 10528 Rep 22,992 Posts Drives: N54 e82 Join Date: Feb 2010 Location: Bayern, Germany iTrader: (1)	The OD on the mid pipes is 68mm. See post #21... DIY installing N55 mid pipes on a N54... http://www.1addicts.com/forums/showthread.php?t=797160 Attached Images __________________ Dackel's European Delivery Museum Guide
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04-29-2015, 08:05 PM	#2
rod.bearings Lieutenant 123 Rep 546 Posts Drives: E92 M3 Join Date: Dec 2013 Location: Alberta iTrader: (3) Garage List 2009 BMW 135i [0.00]	bump!
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