whats this part called?

ZStig · 12-28-2009, 03:45 PM

it goes from 3" to 2" to 3" or something like that. helps quiet and exhaust. I looked for "reducer" but its not it

3002 tii · 01-05-2010, 01:14 PM

no clue but why not just get a quieter muffler?

nickpapa · 01-05-2010, 07:59 PM

i believe that is called a "venturi"

James_E85M · 01-08-2010, 03:21 PM

The design is a venturi, but I doubt it will do much to quite the exhaust. Just put an extra set of straight through design mufflers for a decrease in sound with little/no loss in power.

12-28-2009, 03:45 PM	#1
ZStig instagram 997turbotom 279 Rep 7,377 Posts Drives: Interlagos Z4MR Join Date: Jun 2008 Location: Delray Beach, FL iTrader: (4)	whats this part called? it goes from 3" to 2" to 3" or something like that. helps quiet and exhaust. I looked for "reducer" but its not it __________________
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01-05-2010, 01:14 PM	#2
3002 tii Lieutenant General 2288 Rep 12,565 Posts Drives: Z4 M, X5, GX460 Join Date: Apr 2008 Location: CT iTrader: (99) Garage List F15 X5 xDrive35i [8.75] E86 Z4 M [10.00] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.50] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [9.24]	no clue but why not just get a quieter muffler? __________________ Follow for latest mods
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01-05-2010, 07:59 PM	#3
nickpapa First Lieutenant 23 Rep 374 Posts Drives: Z4 3.0 Join Date: Oct 2008 Location: North Jersey iTrader: (3)	i believe that is called a "venturi"
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01-08-2010, 03:21 PM	#4
James_E85M New Member 2 Rep 27 Posts Drives: 2008 Z4 M Join Date: Jan 2010 Location: Orange, CA iTrader: (-2)	The design is a venturi, but I doubt it will do much to quite the exhaust. Just put an extra set of straight through design mufflers for a decrease in sound with little/no loss in power.
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