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Ways to increase exhaust loudness?

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Old 09-11-2011, 03:29 PM
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SeanR
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Originally Posted by harraj128
where did you get your resonators from?? and yes aryan all of that is fine.
The Porsche Factory, they all came with them, but you have to determine if you have the small or the large ones on your car.
Old 09-11-2011, 03:32 PM
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Pappy
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I have the GT muffler, x pipe and the large resonators. I would love to have the smaller resonators then I believe it would be perfect for my taste. At the moment, it sounds mean when you step on it, but rather subdue otherwise.

87
Old 09-11-2011, 03:51 PM
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harraj128
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where did you get the GT muffler from?
Old 09-11-2011, 03:54 PM
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Pappy
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Originally Posted by harraj128
where did you get the GT muffler from?
928 Specialists

http://www.928gt.com/default5.htm
Old 09-11-2011, 03:58 PM
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harraj128
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The used one?? Also would this be the best muffler to use or are there other ones such as MagnaFlow Series? Final Question, this muffler with straight pipes, would it sound nice?
Old 09-11-2011, 04:31 PM
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harraj128
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What would be the best muffler for Porsche 928 S4 88' from here?
http://www.profusioncustoms.com/muff...t_5x8oval.html
Also how would that sound compared to a standard RMB?
Old 09-11-2011, 09:11 PM
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James Bailey
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Originally Posted by harraj128
Yes it is running perfect.
How would you KNOW ?
Old 09-11-2011, 09:19 PM
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jeff spahn
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I agree. Before you spend money on making it sound "cool", get the car running to spec. Find someone with a hammer and test your sensors as listed in a previous post. Anything before that is like putting three rims on an 84 caprice classic, very ghetto.
Old 09-11-2011, 09:28 PM
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James Bailey
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More to your question about loudness....once you modify any part of the exhaust it changes the level of sound and the resonance that you hear. There is no set answer to how will it sound because that is too subjective.
Just be aware that if you put Hotrod mufflers of any flavor on the car it will quickly sound much like a Camero or 69 Chevy Pickup with a rusted out exhaust. You are dealing with a musical instrument so imagine cutting up a Tuba and adding subtracting replacing a few pieces......most who "roll there own" end up doing a few modifications along the way.
Old 09-11-2011, 09:46 PM
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17prospective buyer
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Originally Posted by Richter12x2
Cheapest way to add meanness to your exhaust is to drill about 1/2" hole in the side of each pipe.
I mean, it's part sarcasm and part truth, I have the stock muffler on mine, untouched, added an X-pipe with no cats, and the thing sounds like it'll eat your children. Part of it's the x, I'm sure, but a big part is I think the sleeves are leaking where it joins together.

I also had a Jeep Cherokee 4.0L back in the day and it sounded vicious. Turned out part of the exhaust had rusted about a 1" hole in it.

So for cheap sound, seriously, drill a hole or two. If you don't like it, those muffler sleeve things like the xpipe used should seal it up fine.
Haha, didn't someone say that the exhaust system on the 928 in Risky Business had a rust crack in the muffler and that's what gave it a unique sound?
Old 09-11-2011, 09:53 PM
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blown 87
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Originally Posted by SeanR
Are you looking for this type of loud? X-pip with cats, small resonators and RMB (my opinion, too loud so added a GTS muffler to it)




Same car with a GTS muffler added



or this kind of loud. This is stock cats, small resonators and RMB.

I have the X, no cats, large resonators and a RMB, iMHO it is a bit loud.
It was perfect with the same setup with a H instead of the X.
I need to try and find a some kind of muffler that will tone it down just a bit, cause I know when I get the blower installed it is going to be way to loud.
Old 09-11-2011, 10:02 PM
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Most often in the T V movie business the cars sounds are "voice overs" added in editing. Rarely the actual car.
Old 09-11-2011, 10:02 PM
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SeanR
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Originally Posted by blown 87
I have the X, no cats, large resonators and a RMB, iMHO it is a bit loud.
It was perfect with the same setup with a H instead of the X.
I need to try and find a some kind of muffler that will tone it down just a bit, cause I know when I get the blower installed it is going to be way to loud.
I know you just got older and ****, post a video so we can hear it.
Old 09-11-2011, 10:23 PM
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My .02c

1 make sure the car is running 100%
2. add RMB and drive for a while. If too quiet, get some small resonators and see how that sounds.
3. have a knowledgeable 928 fanatic look at and drive your car for another opinion.
Old 09-11-2011, 10:57 PM
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blown 87
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Originally Posted by SeanR
I know you just got older and ****, post a video so we can hear it.
How do I do that with my 35MM?
Hell you heard it, you were the one that told me if I had big or little resonators.

What is the progression of the mufflers on the 4 valve engines?
And how loud are they?


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