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muffler hack question...

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Old Jan 9, 2009 | 12:24 PM
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muffler hack question...

i did the pse hack and love it.. craving more..

thinking of adding a second bypass from inlet to outlet (bypassing muffler alltogether)

using a 1.5" bypass, how much louder do you guys think it would be? minimal? considerable?

i'm no scientist, but guessing the exhaust would take the path of least resistance, it should be louder, but more muffled than bypass pipes..

opinions?
 
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Old Jan 9, 2009 | 01:36 PM
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I have no patience.. just dropped it off. Ill post results tonight!
 
Old Jan 9, 2009 | 03:22 PM
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Originally Posted by EB847
I have no patience.. just dropped it off. Ill post results tonight!
There are a probably a hundred + threads on this over at rennlist (well a lot anyway). You are discussing the difference between the MK1 mod and MK2. MK2 is shown in your picture; MK1 is what you are contemplating. MK1 is much louder. MK2 is better suited to 3.6L cans. In fact, I just gave away a set of the MK2 cans in the 3.4 variety...

Here is "the" PSE mod thread over on Rennlist. It has loads of information including descriptions and pics of both mods, installation innstructions, sound clips, etc. Here is another thread.

IMO, the best bang for the buck in terms of exhaust sound is a set of Fabspeed bypass pipes. A used set goes for around $200, and they are nice and loud. Great for the track (including loss of muffler weight!)

-td
 

Last edited by himself; Jan 9, 2009 at 03:25 PM.
Old Jan 9, 2009 | 04:08 PM
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Originally Posted by himself
There are a probably a hundred + threads on this over at rennlist (well a lot anyway). You are discussing the difference between the MK1 mod and MK2. MK2 is shown in your picture; MK1 is what you are contemplating. MK1 is much louder. MK2 is better suited to 3.6L cans. In fact, I just gave away a set of the MK2 cans in the 3.4 variety...

Here is "the" PSE mod thread over on Rennlist. It has loads of information including descriptions and pics of both mods, installation innstructions, sound clips, etc. Here is another thread.

IMO, the best bang for the buck in terms of exhaust sound is a set of Fabspeed bypass pipes. A used set goes for around $200, and they are nice and loud. Great for the track (including loss of muffler weight!)

-td
thx. the attached pic is of my 3.6 cans with the pse mod (mk2) i already had done. i am adding the second bypass (mk1) (white arrow) in addition.

from what i have read, bypass pipes, while great for the track, will not work for my dd. (cell phone, stero, headaches, etc.) never heard in person though..
 
Old Jan 9, 2009 | 04:13 PM
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Cool

My MK2 modded ones sounded good......but they were still dang heavy!
 
Old Jan 9, 2009 | 04:25 PM
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Originally Posted by EB847
thx. the attached pic is of my 3.6 cans with the pse mod (mk2) i already had done. i am adding the second bypass (mk1) (white arrow) in addition.

from what i have read, bypass pipes, while great for the track, will not work for my dd. (cell phone, stero, headaches, etc.) never heard in person though..
I have run bypass pipes, and there was no problem with phone (integrated into stereo), the stereo itself, or headaches. With the windows closed it's loud, but not unbearable. Well close to unbearable

As for the neighbors, that's a different story...

-td
 
Old Jan 9, 2009 | 07:20 PM
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result..

sweeeeet! no drone or vibration at all.. same tone, louder volume. minimal differece from stock inside the cabin at cruising speed (around town and freeway). phone and stereo still in play no problem.

beautiful aggressive roar under accelleration (normal and heavy) mostly from 2800 rpm up. i would say 20% volume increase from first pse mod which was already a great improvement over stock.

outside the car... wow! sounds like the great sports car it is!!

me:

neighbors:
 
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Last edited by EB847; Jan 9, 2009 at 07:23 PM.
Old Jan 10, 2009 | 09:42 AM
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Hey EB, is there any drone or resonance in the cabin when cruising in fifth or sixth? Around 2000 to 3000 RPM?
 
Old Jan 10, 2009 | 09:57 AM
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zero drone/resonance in any gear at any rpm.

...and i know what i'm talking about. i had a custom exhaust built for my 2000 boxster s. 2-3k rpm was like a 10k watt 42" subwoofer! above 3k was bad a$$ though!

anyone local is welcome to come hear it. i'll be at eurosunday tomorrow at pavillions.
 
Old Jan 13, 2009 | 07:44 PM
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Hey EB, do you know if they used stainless steel pipe?
 
Old Jan 13, 2009 | 08:38 PM
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i purchased a tight radius stainless mandrel u tube the first mod (hard to find and not cheap) ..cost me $70 for it in standard gauge. way overkill.

the second time i just had the shop use aluminized steel which will work equally as well and won't rust.
 
Old Jan 14, 2009 | 11:42 PM
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I have a set of Custom High Flow Cat Pipes that were made by Fast Intentions that would add a nice sound. See my approved ad in the classifieds.
 

Last edited by GT3 Chuck; Jan 14, 2009 at 11:50 PM.
Old Jan 15, 2009 | 01:49 PM
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Any chance you can post some videos? Would love to hear the sound..
 
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