Vibrant Performance Exhaust

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Originally Posted by Aeternalis

AFAIK the exhaust pipes are 2" OD.

A y-merge to 3" maintains the approximately the same amount of volume that the dual 2-inch pipes provides. Merging to a 2.5" single pipe for the muffler might increase backpressure a bit. I don't have any way to prove this though, lol.

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If the stock two pipes are 2" each in diameter, that is ~6.28² inches of cross section (A=pi*r², each pipe is ~3.14² for a total of ~6.28² inches)

The single 2.5" pipe is ~4.91² inches of cross section
The single 3.0" pipe is ~7.07² inches of cross section

I would assume that the single 2.5" would create some back pressure, but I have no background in fluid dynamics for gas so I wouldn't know.

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Originally Posted by GoGators

vibrant 2.5 muffler with M3 tubular headers w/cats:

https://www.youtube.com/watch?v=J2xhqnQTAtw

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I meant catless headers.


GoingHAM mobile

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Originally Posted by UdubBadger

I'd love to hear the vibrant paired with some headers.

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Stay tuned...

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Originally Posted by BMWCurves

If the stock two pipes are 2" each in diameter, that is ~6.28² inches of cross section (A=pi*r², each pipe is ~3.14² for a total of ~6.28² inches)

The single 2.5" pipe is ~4.91² inches of cross section
The single 3.0" pipe is ~7.07² inches of cross section

I would assume that the single 2.5" would create some back pressure, but I have no background in fluid dynamics for gas so I wouldn't know.

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I was thinking the 3" would be best. two 2" pipes to a 3" to muffler sounds less constricting than the 2.5"

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Originally Posted by FL116

Stay tuned...

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What are you thinking for headers? Also, did you delete your resonator?

I want the vibrant muffler with the res delete, but the minute I throw catless headers into the exhaust, I will be heard from miles away.

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Originally Posted by GotZHP

What are you thinking for headers? Also, did you delete your resonator?

I want the vibrant muffler with the res delete, but the minute I throw catless headers into the exhaust, I will be heard from miles away.

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He'll be deleting his second resonator now after he heard mine yesterday [emoji41] I want to get headers down the line and tbh I don't think it will be unbearably loud. I'd recommend looking into the BimmerBrake headers.

https://vimeo.com/170320813

Seems I'm late to the party, but you've all convinced me! Going to be ordering the 2.5", hopefully the whole idea of the increase in back pressure turns out to be false :fingerscrossed
Gotta love amazon prime

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Originally Posted by Prestovie

Seems I'm late to the party, but you've all convinced me! Going to be ordering the 2.5", hopefully the whole idea of the increase in back pressure turns out to be false :fingerscrossed
Gotta love amazon prime

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Delete your second resonator too! Trust me you won't regret it.

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Originally Posted by bosszhp

Delete your second resonator too! Trust me you won't regret it.

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Haha I'll consider it:) do you have the 2.5 or the 3? Just wondering

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Originally Posted by Prestovie

Haha I'll consider it:) do you have the 2.5 or the 3? Just wondering

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2.5

http://uploads.tapatalk-cdn.com/2016...1cce67feac.jpg