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Old 01-22-2010, 02:37 PM   #21
zack_odom
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QUOTE=Raf99;2394252]What was it ?

I always wondered why do STI's sound like they do?

[edit]: found the answer - http://en.wikipedia.org/wiki/Flat-fo...Automobile_use
"With a piston starting its power strokes every 180 degrees of crankshaft rotation, and the crank throws 180 degrees apart, all the pistons must come to complete stop and reverse before the next one can start its power stroke. This results in a gap between power strokes and a pulsating delivery of power to the flywheel."[/quote]

FAIL. USDM STi's sound the way they do due tan unequal length header design. CIP:




If replaced with an equal length header, Suby's sound
like anyother four cyl
And Jmolina is rolling around with a sparkplug unplugged for some reason....
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Old 01-22-2010, 03:57 PM   #22
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^^^

Your muffler is bent as hell!!!!

Is that your brothers recent cb??
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Old 01-22-2010, 04:10 PM   #23
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Spark plugs came loose? lol
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Old 01-22-2010, 04:50 PM   #24
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theres a midget underneath the car farting?
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Old 01-22-2010, 05:05 PM   #25
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Quote:
Originally Posted by Raf99 View Post
What was it ?

I always wondered why do STI's sound like they do?

[edit]: found the answer - http://en.wikipedia.org/wiki/Flat-fo...Automobile_use
"With a piston starting its power strokes every 180 degrees of crankshaft rotation, and the crank throws 180 degrees apart, all the pistons must come to complete stop and reverse before the next one can start its power stroke. This results in a gap between power strokes and a pulsating delivery of power to the flywheel."
That is the same thing Accords have.

The reason the STi sounds the way it does is that the cylinder banks have unequal length runs, which results in the exhaust pulses being offset. If you put equal length exhaust components on a Subie, it sound just like a Volkswagen, or any other flat engine, which is to say, much like an inline engine.

But for marketing reasons, Subaru leaves them unequal length to give them that uneven beat.

P.S. If you run an Accord on 3 cylinders, or have bent valves it will sound almost identical to a Subaru.
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Old 01-22-2010, 05:06 PM   #26
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Is that an Oompa Loompa driving?

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Old 01-22-2010, 05:10 PM   #27
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Quote:
Originally Posted by zack_odom View Post
QUOTE=Raf99;2394252]What was it ?

I always wondered why do STI's sound like they do?

[edit]: found the answer - http://en.wikipedia.org/wiki/Flat-fo...Automobile_use
"With a piston starting its power strokes every 180 degrees of crankshaft rotation, and the crank throws 180 degrees apart, all the pistons must come to complete stop and reverse before the next one can start its power stroke. This results in a gap between power strokes and a pulsating delivery of power to the flywheel."
FAIL. USDM STi's sound the way they do due tan unequal length header design. CIP:




If replaced with an equal length header, Suby's sound
like anyother four cyl
And Jmolina is rolling around with a sparkplug unplugged for some reason....[/quote]

Beat me to it.
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Old 01-22-2010, 06:42 PM   #28
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hey guys, this is my car and we did not do this on purpose, we're heading to get something to eat when out of no where the car started to sound like this, started loosing alot of power and we quickly pulled over, we notice that sparkplug number 4 was disconnected from the distributor. The plug was no longer good, so we went to autozone to buy a new set and it fixed the problem
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Old 01-22-2010, 09:49 PM   #29
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I was going to say oil in the plugs.


X2 on the 'Boxer engine' exhaust sound, it's because of the stock header. If ya ever check out their forums, there's many threads about people worried if they're going to lose the "rumble, rumble" sound if installing a Perrin Header.
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Old 01-23-2010, 12:22 AM   #30
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Quote:
Originally Posted by owequitit View Post
Beat me to it.[/quote]
Lol gotcha. Actually me being bored at work gotcha lol.
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Old 01-23-2010, 01:10 AM   #31
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unequal length manifold setup.

i used to work on the ej20's a lot. they're pretty swell.

i've heard some that sound like ass though, but most anything aftermarket exhaust-wise as long as it's not equal length (which i never understood why people do it but oh well), from ultimate or cobb is win

i love subie's. especially regular WRX waggies. not sure why, just do.
http://www.youtube.com/watch?v=Z-xiqrUvuOA
and one without the music, which is 9th. wonder and he's a chill as dood, but yeah:
http://www.youtube.com/watch?v=j7_8os7nJ5w

highway pulls ftw!!!
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Old 01-23-2010, 09:08 AM   #32
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i remember when i had my STI i bought a Apex'i exhaust it was quite but sometimes just for the heck of it i used to take off the axleback to go to the city... i loved it but only some cars can pull off an exhaust leak and still sound good... subies, srt-4, muscle cars....

my boy has a race header on his beat ass ls and that shit for some reason straight up sounds like a subie
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Old 01-26-2010, 08:15 PM   #33
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i want that sound on my car.....everybody was like WTF
the real sti people were like damn...
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Old 01-26-2010, 08:58 PM   #34
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Boxer engines sound bad ass with a good exhaust set up. Hell, they even sound good running with a huge ass exhaust leak.
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Old 01-26-2010, 09:53 PM   #35
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Old 01-26-2010, 10:05 PM   #36
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my old cb had sounded like a subi when this happened lol


i had 2 hole in my down pipe lol

and when this broke here

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Old 01-26-2010, 10:08 PM   #37
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haha..in this case it was the spark plugs...
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Old 01-28-2010, 01:30 AM   #38
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so is there anyway to get this sound without getting exhaust leaks and taking out spark plug wires? LOL
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Old 01-28-2010, 12:24 PM   #39
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Quote:
Originally Posted by rave93 View Post
so is there anyway to get this sound without getting exhaust leaks and taking out spark plug wires? LOL
yeah have a true duel exhaust on the cb lol
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Old 01-28-2010, 12:32 PM   #40
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sorry but missfires arent cool
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