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What are some of the quietest exhausts?

Not looking to have any drone, or anything. I would mate it up with HFCs ... what do you all think who have heard it in person? Using youtube is

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Old 03-10-2010, 06:39 PM   #1 (permalink)
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Default What are some of the quietest exhausts?

Not looking to have any drone, or anything. I would mate it up with HFCs ... what do you all think who have heard it in person? Using youtube is a hard evaluation. So I am asking people with experience who have heard or seen in person different exhausts.
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Old 03-10-2010, 06:50 PM   #2 (permalink)
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I'd say the invidia gemini is one of the more quiet ones.
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Old 03-10-2010, 07:28 PM   #3 (permalink)
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BERK Cat back is too, would work great with the HFC.
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Old 03-10-2010, 07:38 PM   #4 (permalink)
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if I just added HFC to the stock exhaust with the stillen g3 intake -- would I be leaving a lot of hp on the table ?

Cause the stock exhaust mated to HFC (that works right?) would probably my idle sound..
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Old 03-10-2010, 07:43 PM   #5 (permalink)
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What are some of the quietest exhausts?

.....stock
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Old 03-10-2010, 08:12 PM   #6 (permalink)
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Quote:
Originally Posted by 6MT View Post
What are some of the quietest exhausts?

.....stock
that's why i just asked that other question ^
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Old 03-10-2010, 08:27 PM   #7 (permalink)
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Originally Posted by B1nks View Post
BERK Cat back is too, would work great with the HFC.
in a seperate thread, Matt rated the Berks HFC with CBE combo as a 9 on a scale of 1-10 1 being not loud and 10 being too loud...
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Old 03-10-2010, 08:34 PM   #8 (permalink)
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Stock exhaust with HFC is a pretty good combination. We have had a few people go back to stock exhaust+HFC after trying a CBE.
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Old 03-10-2010, 08:58 PM   #9 (permalink)
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Quote:
Originally Posted by KEVTEX View Post
Stock exhaust with HFC is a pretty good combination. We have had a few people go back to stock exhaust+HFC after trying a CBE.
ahh really? But am I leaving 15-20 whp on the table? I was just reading a bunch of threads and dynos that show fi/stillen cbe making 15-20 whp, and invidia 8-10 whp..

20 whp is a good amount..

I mean I would love to stay stock exhaust/hfc, but don't want to leave a good amount of power on the table..
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Old 03-10-2010, 08:59 PM   #10 (permalink)
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Anybody have a clip of a stock exhaust with HFCs?
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Old 03-10-2010, 09:08 PM   #11 (permalink)
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+1 on stock exhaust...LOL
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Old 03-10-2010, 09:11 PM   #12 (permalink)
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Originally Posted by MikeySed View Post
ahh really? But am I leaving 15-20 whp on the table? I was just reading a bunch of threads and dynos that show fi/stillen cbe making 15-20 whp, and invidia 8-10 whp..

20 whp is a good amount..

I mean I would love to stay stock exhaust/hfc, but don't want to leave a good amount of power on the table..
I gained 15whp from my Berk HFC's w/ stock exhaust

Berk HFC dyno results
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Old 03-10-2010, 09:27 PM   #13 (permalink)
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Quote:
Originally Posted by Red370 View Post
I gained 15whp from my Berk HFC's w/ stock exhaust

Berk HFC dyno results
now for argument sake if you add a FI/Stillen cb... are you going to gain 15-20whp more?
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Old 03-10-2010, 09:46 PM   #14 (permalink)
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Quote:
Originally Posted by MikeySed View Post
now for argument sake if you add a FI/Stillen cb... are you going to gain 15-20whp more?
No, it appears that the first opening up of the exhaust, whether it be HFC's, Test Pipes, or CBE, nets the most gains, you might see somewhere between 8-10, just speculation though.
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Old 03-10-2010, 09:47 PM   #15 (permalink)
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Most people that dyno with the HFC's add the intakes before finally adding the CBE or simultaneously, so there arent too many independent tests with just stock intakes w/ HFC's/CBE
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