These cars are loud.

Chriskm3 · 02-27-2013, 01:08 PM

Loud but sexy

M3N74L · 02-27-2013, 07:35 PM

Quote:

The catalytic converters are the main source of backpressure in the stock system

How do race m3s generate back pressure. Surely they don't run cats.

Ashley Schaeffer BMW · 02-27-2013, 07:40 PM

Also if thats the case then why do some mufflers that reduce backpressure give you a torque dip at lower RPMs?

M3N74L · 02-28-2013, 09:04 AM

Found this relating to back-pressure:

http://www.8thcivic.com/forums/bolt-...le-sticky.html

02-27-2013, 01:08 PM	#45
Chriskm3 Colonel 59 Rep 2,186 Posts Drives: M3 Join Date: Jul 2012 Location: Toronto iTrader: (4)	Loud but sexy __________________ Vf supercharger + tune/H&R coils/ Akra evolution exhaust/Volk te37/ Rs-3 tires/ Brembos /TIal BOV/ OSS blacked out headlights/LUX v3/Led taillights/ Challenge Front lip/ P3 vent gauge/ F10 m5 shift mob/Matte black front grills/ And a funky air fresher
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02-27-2013, 07:40 PM	#47
Ashley Schaeffer BMW Banned 91 Rep 833 Posts Drives: E92 M3 Join Date: Dec 2012 Location: Charlotte iTrader: (1)	Also if thats the case then why do some mufflers that reduce backpressure give you a torque dip at lower RPMs?
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02-28-2013, 09:04 AM	#48
M3N74L Chav 2 Rep 34 Posts Drives: 08 Jerez Black E92 6MT Join Date: Aug 2012 Location: Houston iTrader: (0)	Found this relating to back-pressure: http://www.8thcivic.com/forums/bolt-...le-sticky.html
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