exhaust
MECP Certified Installer
Joined: Feb 2009
Posts: 3,176
Likes: 3
From: Mesquite, TX-DFW
Just reading this and the other "exhaust" threads lately are really making me want to write a "definative exhaust thread" just to clear up all the BS and ignorance.
I am not trying to sound like I am standing on a pedistal of knowledge but com'on guys, please try to take thermo/fluid dynamics into account for god sake!
+1 Mr. Cake
I am not trying to sound like I am standing on a pedistal of knowledge but com'on guys, please try to take thermo/fluid dynamics into account for god sake!
+1 Mr. Cake
Rotary Freak
Joined: Jan 2005
Posts: 1,529
Likes: 22
From: Good Ol' Ky
via wikipedia
Mazda began racing RX-7s in the IMSA GTU series in 1979. That first year, RX-7s placed first and second at the 24 Hours of Daytona, and claimed the GTU series championship. The car continued winning, claiming the GTU championship seven years in a row. The RX-7 took the GTO championship ten years in a row from 1982. The RX-7 has won more IMSA races than any other car model.In the USA SCCA competition RX-7s were raced with great success by Don Kearney in the NE Division and John Finger in the SE Division.
Mazda began racing RX-7s in the IMSA GTU series in 1979. That first year, RX-7s placed first and second at the 24 Hours of Daytona, and claimed the GTU series championship. The car continued winning, claiming the GTU championship seven years in a row. The RX-7 took the GTO championship ten years in a row from 1982. The RX-7 has won more IMSA races than any other car model.In the USA SCCA competition RX-7s were raced with great success by Don Kearney in the NE Division and John Finger in the SE Division.
Joined: Feb 2001
Posts: 29,798
Likes: 128
From: London, Ontario, Canada
Nothing like a car which is putting down 130 RWHP running around with a 100 dB exhaust. 
Meanwhile there are 2nd gens putting down 500HP with sound levels only a bit higher than stock.
A straight pipe and single parts store muffler is going to be ungodly loud on an NA. Hell, it's ungodly loud on a turbo car.
Just to toot my own horn, this is what I mean by a proper sounding rotary exhaust:
http://www.youtube.com/watch?v=cEDp20F0R-c
Not too loud, not too quiet. Around town at 2000 RPM it is as quiet as stock.
Get on the throttle and it sounds not like a can of angry bees, but something else entirely:
http://www.youtube.com/watch?v=JVwoOYqvZ5E
I've put 12 years into developing the perfect rotary exhaust note.
Meanwhile there are 2nd gens putting down 500HP with sound levels only a bit higher than stock.
A straight pipe and single parts store muffler is going to be ungodly loud on an NA. Hell, it's ungodly loud on a turbo car.
Just to toot my own horn, this is what I mean by a proper sounding rotary exhaust:
http://www.youtube.com/watch?v=cEDp20F0R-c
Not too loud, not too quiet. Around town at 2000 RPM it is as quiet as stock.
Get on the throttle and it sounds not like a can of angry bees, but something else entirely:
http://www.youtube.com/watch?v=JVwoOYqvZ5E
I've put 12 years into developing the perfect rotary exhaust note.
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