Exhaust questions
Thread Starter
Instructor
Joined: Dec 2007
Posts: 123
Likes: 0
From: Detroit, MI
Exhaust questions
Hey all,
I'm to the point where I'd like to hear the individual explosions inside the cylinders a little more directly. I know there are a ton of options. Some for sound and performance, some just for sound, and some just to save money. I've read about magnaflows/rs barn/etc. I'm really hoping to end up with a raspy, nasty sound.
The 968 has a strange set up with the 1 into 2 pipes and then 2 back into 1 which seems to make things more difficult.
When people are doing these mods, are they creating a single pipe system from the cat back???? Are they eliminating the mid-muffler??
Has anyone kept the mid-muffler and ran it open after that?
I'm looking for a low-cost nasty tone, but not bleeding ears.
I'm to the point where I'd like to hear the individual explosions inside the cylinders a little more directly. I know there are a ton of options. Some for sound and performance, some just for sound, and some just to save money. I've read about magnaflows/rs barn/etc. I'm really hoping to end up with a raspy, nasty sound.
The 968 has a strange set up with the 1 into 2 pipes and then 2 back into 1 which seems to make things more difficult.
When people are doing these mods, are they creating a single pipe system from the cat back???? Are they eliminating the mid-muffler??
Has anyone kept the mid-muffler and ran it open after that?
I'm looking for a low-cost nasty tone, but not bleeding ears.
On the Radar
Rennlist Member
Rennlist Member
Joined: Dec 2004
Posts: 5,013
Likes: 5
From: Bel Air, Md.
B&B with resonator IMHO, sounds nice.
The RSB also sounds really good.
You can not go wrong with either unit.
Although the B&B is known to crack after a few years.
Have not really heard anything bad about the RSB unit.
Pic of my second B&B
The RSB also sounds really good.
You can not go wrong with either unit.
Although the B&B is known to crack after a few years.
Have not really heard anything bad about the RSB unit.
Pic of my second B&B
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Joined: May 2004
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From: near Cologne, Germany
RL Community Team
Rennlist Member
Rennlist Member
Joined: Jun 2004
Posts: 11,014
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From: San Francisco Area
Just removing the resonator, aka mid muffler, will make it louder and flow much better. The stock resonator is a brick wall to the exhaust flow.
The RSB exhaust sounds really raw and raspy. At the time I first heard it I was impressed, especially since the only thing I ever hear is stock. But after hearing it again I think it sounds too ratty for my taste but many people like it. I've heard a 968 with the B&B and it sounds great. Only slightly raspy, with a nice tame growl. Personally I wouldn't even get the B&B and I'd go for a resonator delete and some modest aftermarket muffler as I like it more on the subtle side. YMMV.
In the end I decided to get a muffler with a turbine in it.........
The RSB exhaust sounds really raw and raspy. At the time I first heard it I was impressed, especially since the only thing I ever hear is stock. But after hearing it again I think it sounds too ratty for my taste but many people like it. I've heard a 968 with the B&B and it sounds great. Only slightly raspy, with a nice tame growl. Personally I wouldn't even get the B&B and I'd go for a resonator delete and some modest aftermarket muffler as I like it more on the subtle side. YMMV.
In the end I decided to get a muffler with a turbine in it.........
Thread Starter
Instructor
Joined: Dec 2007
Posts: 123
Likes: 0
From: Detroit, MI
Thanks for all the suggestions and input on this subject. I knew there would be many combinations. I'm leaning toward the resonator delete with aftermarket muffler. Came across this on my SVX forum as a replacement for the mid muffler. I wonder...
http://www.classicchambered.com/
Thanks,
http://www.classicchambered.com/
Thanks,
On the Radar
Rennlist Member
Rennlist Member
Joined: Dec 2004
Posts: 5,013
Likes: 5
From: Bel Air, Md.
The 968 is a little different when it comes to "freeing up flow".
It actually likes a little back pressure.
Because of the resonant induction manifold, a reduction in back pressure can affect the pulse timing and gas velocity of the system.
Porsche did a very good job with tuning the system.
A reduction in back pressure will actually show a loss of power and cause dips in the power curve.
It actually likes a little back pressure.
Because of the resonant induction manifold, a reduction in back pressure can affect the pulse timing and gas velocity of the system.
Porsche did a very good job with tuning the system.
A reduction in back pressure will actually show a loss of power and cause dips in the power curve.
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Race Director
Joined: Jul 2001
Posts: 10,194
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'Although the B&B is known to crack after a few years.
Have not really heard anything bad about the RSB unit.'
Wasn't there a whole thread about someone who had the RSB unit that cracked-the owner had business in Philadelphia, flew in with the broken part, and brought it to RSB for repair??
Have not really heard anything bad about the RSB unit.'
Wasn't there a whole thread about someone who had the RSB unit that cracked-the owner had business in Philadelphia, flew in with the broken part, and brought it to RSB for repair??
On the Radar
Rennlist Member
Rennlist Member
Joined: Dec 2004
Posts: 5,013
Likes: 5
From: Bel Air, Md.
'Although the B&B is known to crack after a few years.
Have not really heard anything bad about the RSB unit.'
Wasn't there a whole thread about someone who had the RSB unit that cracked-the owner had business in Philadelphia, flew in with the broken part, and brought it to RSB for repair??
Have not really heard anything bad about the RSB unit.'
Wasn't there a whole thread about someone who had the RSB unit that cracked-the owner had business in Philadelphia, flew in with the broken part, and brought it to RSB for repair??
https://rennlist.com/forums/968-foru...lace-mine.html
If you remember the details of the thread it was not RSB's fault, but rather their muffler supplier.
He was going to be there anyway, so he brought it with him. Not like he flew half way across the country just to return his muffler.
The customer was satisfied in the end.
To the OP, lots of time, money and engineering has been spent on designing a system which does not lose any power.
My advise is to chose one of those manufacturers and spent the extra few hundred dollars, rather than having something made at a shop which, may or may not work.
Race Director
Joined: Jul 2001
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Whether it was a subvendor or not the owner paid RSB for the part-if something on your Porsche car breaks do you go after Mahle, or Speedline, or Brembo, or whichever other of the hundreds of vendors that supply parts, or do you go back to the dealership? It was resolved properly in the end, which was good.
Race Director
Joined: Jul 2001
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I have no idea, but thanks for loading the other thread-it reminds me of the TuV quality you get and pay for with Cargraphic. Since they manufacture the entire system I would assume it's more robust than a 'put together' type unit with bits from here and bits from there.