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Will an RMB on stock exhaust do much?

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Old 05-15-2007, 04:01 PM
  #16  
Elmiko
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That's it then-I'm gonna get one!
Old 05-15-2007, 04:12 PM
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Gretch
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As one who has spent plenty on modifications, let me say the RMB is the best bang for the buck out there.........

Bar none, And there are a LOT of good ones.
Old 05-15-2007, 07:24 PM
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scott863
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Can somebody please explain what exactly an RMB is?
Old 05-15-2007, 07:28 PM
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s-carsgo
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Rear Muffler Bypass.
Old 05-15-2007, 07:39 PM
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Nicole
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I have no idea, if my RMB is a 928 International or 928 Specialists type - I bought it on ebay to see, if I would like it.

What I can tell you is that since we installed it, countless people have told me how great my car sounds!

There are some differences in the exhaust configuration between 87 and 91 that might yield a slightly different result in your case. But if 928 International has them in stock, nothing should hold you back from calling them NOW!

My recommendation is to go with the stainless version, if it's available.
Old 05-15-2007, 10:53 PM
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AJK
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Even if you have an early car for which there is no RMB available, make your own. A twin pipe extension from Summit Racing Equipment, a decent muffler shop and about $150 and you're done. Use the flange from the stock muffler and have the shop bend up a short pipe to join the purchased twin pipe to the old flange. Took maybe 20 nimutes, start to finish. Work is done right on the car so the alignment is good.

Sounds fantastic, just like everyone has said. Best mod I've done.
Old 05-15-2007, 11:02 PM
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James-man
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Originally Posted by Nicole

My recommendation is to go with the stainless version, if it's available.
Yup. And not just 'cause they are shiny. I have the non-stainless type and found it needs repaint every few years.
Old 05-16-2007, 12:15 AM
  #23  
Bill Ball
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Originally Posted by H2
Is this authenticated? Loss of power by just removing the rear muffler?

H2
No, but my gas mileage went way down because I stopped driving the car like a little old lady.
Old 05-16-2007, 12:26 AM
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Joe '87 S4
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I have the 928 International stainless steel RMB and it is money well spent. I was afraid it would be too loud or annoying before I got it, but it isn't at all. It just sounds "right". It sounds like a high-end V8 should now.
Old 05-16-2007, 07:07 PM
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Originally Posted by s-carsgo
Rear Muffler Bypass.
I understand that

What I meant, is what exactly is it? It seems like it just replaces the rear muffler, but the word bypass is used, which makes it confusing.
Old 05-16-2007, 11:02 PM
  #26  
SeanR
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Originally Posted by scott863
I understand that

What I meant, is what exactly is it? It seems like it just replaces the rear muffler, but the word bypass is used, which makes it confusing.
It bypasses the input to the muffler, and the out put of the muffler, with a couple of nice bendy tubes.

The name sounds cool.
Old 05-17-2007, 11:19 AM
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H2
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I wouldn't have a Pcar w/out a custom exhaust or RMB.

Harvey
Old 05-17-2007, 01:57 PM
  #28  
Jim bailey - 928 International
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the answer to the question.. "Will an RMB on stock exhaust do much? " Yes, it will make you SMILE !
Old 05-17-2007, 05:26 PM
  #29  
SMTCapeCod
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Originally Posted by s-carsgo
They aren't bad sounding cars even in stock form but the RMB sounds extra nice from what I can tell in the videos posted about. The inline 5 turbo in my '93 Audi S4 sounded like a sewing machine on crack until I installed the 3" turbo back exhaust from Stromung. Now the S4 at WOT can scare my Shark silly. ;-) Amazing how something like that can transform the car.

hm. My 928 Euro w/32V exhaust makes my A6 4.2L w/resonator bypass pee itself.
Old 05-17-2007, 08:51 PM
  #30  
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Originally Posted by Elmiko
After going through a lot of the exhaust threads, I'm still not sure if it would make any sense to install an RMB on an otherwise stock '87 S4 exhaust. I'm really amazed at how quiet this car is with the factory setup. I don't want to get too carried away-I'd just like a little more exhaust note, but not a full muscle car tone, and I'm not really looking for an HP increase yet. More to the point, I don't have the budget right now for a full exhaust upgrade! Any thoughts on this?

I think RMB is what Greg Brown just did on my car.
It made a huge difference with the sound. It sounds like it should now.
It was very quiet stock.
I have to look up the Invoice to see exactly what he did and get back to you.

Or if Iceman chimes in, he saw the invoice and might be able to pull it up on his email faster than I can find the file


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