Drivetrain (Cooper S) MINI Cooper S (R53) intakes, exhausts, pulleys, headers, throttle bodies, and any other modifications to the Cooper S drivetrain.

Drivetrain Randy Webb's new exhaust

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Old Oct 27, 2005 | 05:55 AM
  #26  
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Originally Posted by skuzy
thats bloody heaps for a catback only. i was hoping it would be cheaper than the others.. oh well i guess u have to make a profit somehow.!

how much would headers cost then?!
Dude... Even if it was a grand for that kind of performance gain, it would be well worth it. As far as profits, who knows what production costs to develop something like this realistically... but I'm sure it isn't cheap... especially considering there are electronics involved in this system!

Regarding headers... Webbmotorsports carries one, and is testing another... but personally...I'll worry about the header later down the road... I'm saving for this bad boy when it's ready.
 
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Old Oct 27, 2005 | 10:10 AM
  #27  
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For weeks I have been so close to ordering a Miltek header and exhaust and then I saw the Webb link a few days ago and I'm waiting, which isn't an easy thing for me to do.
 
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Old Oct 27, 2005 | 10:25 AM
  #28  
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Toughest part it that if it truly comes out to be almost 9 bills, you could have a full Milltek system for only $100 more from some suppliers!!!

Dang, I though my home theater "problem" was a money pit!!


Joel
 
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Old Oct 27, 2005 | 10:54 AM
  #29  
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Is that 10+ hp over the 18 hp that Magnaflow claims, the 10 hp that RandyBMC claims (revised down from his earlier claims), the 6 hp that I measured on my car, or the zero hp that European Car magazine measured?

Originally Posted by F15EWeapon
this bird also mentioned the "possibility" that power could be in the realm of 10+ hp OVER the Magnaflow with the butterfly open... 7 hp more than the 'flow with it closed...
 
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Old Oct 27, 2005 | 11:00 AM
  #30  
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Originally Posted by andy@ross-tech.com
Is that 10+ hp over the 18 hp that Magnaflow claims, the 10 hp that RandyBMC claims (revised down from his earlier claims), the 6 hp that I measured on my car, or the zero hp that European Car magazine measured?
Being that it is "beta" and no claims have been made I guess you will have to wait like everyone else.......

btw...... I have always found you "testy" but fair......... isn't this a bit "vulture" like and a bit beneath you?
 
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Old Oct 27, 2005 | 11:01 AM
  #31  
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From: Naw-folk, VA
Originally Posted by andy@ross-tech.com
Is that 10+ hp over the 18 hp that Magnaflow claims, the 10 hp that RandyBMC claims (revised down from his earlier claims), the 6 hp that I measured on my car, or the zero hp that European Car magazine measured?
Good question Andy... but seeing how this was strictly rumour, and me not asking that question to my source, I really can't give you a definitive answer. I know you're all about real numbers, so best bet would probably be to wait and see what someone dyno's once it's actually in full production. All I know is it was enough of a tease that I'll wait until it's out with some numbers before I pull the trigger.

NOW... if I were to guess... I'd say 10+ over RandyBMC's numbers, not Magnaflows. Just a guess though...
 
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Old Oct 27, 2005 | 11:02 AM
  #32  
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Asking for more information about gains is being a "vulture"? If so, send in the carrion! :smile:

BTW, I have been reading this book which has some interesting info applicable to this type of exhaust design:

http://www.amazon.com/exec/obidos/tg...419469-1511335

Originally Posted by SpiderX
Being that it is "beta" and no claims have been made I guess you will have to wait like everyone else.......

btw...... I have always found you "testy" but fair......... isn't this a bit "vulture" like and a bit beneath you?
 
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Old Oct 27, 2005 | 11:17 AM
  #33  
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Randy/Brian, a couple of questions:

1) Will the system be a bolt-on like the UUC, or a clamp-on like most others?

2) Will the butterfly valve be a) user switchable on/off, b) user variable, or c) throttle/exhaust pressure/vacuum sensitive?

Thanks.
 
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Old Oct 27, 2005 | 12:13 PM
  #34  
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Originally Posted by mr. zero
2) Will the butterfly valve be a) user switchable on/off, b) user variable, or c) throttle/exhaust pressure/vacuum sensitive?
Thanks.
Please let there be an option "b"
 
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Old Oct 27, 2005 | 12:33 PM
  #35  
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Originally Posted by andy@ross-tech.com
Asking for more information about gains is being a "vulture"?
The manufacturer has made no claims. The only post from the manufacturer in this thread was this:

I can’t say the power gains yet since we are not on the final production piece, but you guys WILL like it.
You can wait like the rest of us for Webb to publish test results, and then you can pick them apart, just like you did the crank pulley results. And if for some reason they don't produce results, I'm certain they will be raked over the proverbial coals.
 
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Old Oct 27, 2005 | 01:16 PM
  #36  
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Yah, und ya culd sell yor Miltek to one o them guys who is yust now tinkin aboot it! Yoor one fart smeller! Ya
 
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Old Oct 27, 2005 | 01:39 PM
  #37  
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BTW, I like the idea of an exhaust that has stock-ish noise levels when you don't need it but is a rip-snorting beast when you do. The reason I ditched the Magnaflow was that even when I was just cruising or driving at RPM below 6,000 it made tons more noise and drone than stock, despite yielding no useable power gains at those times. Hopefully, Randy's new exhaust will deliver the best of both worlds.
 
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Old Oct 27, 2005 | 08:29 PM
  #38  
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Originally Posted by andy@ross-tech.com
BTW, I like the idea of an exhaust that has stock-ish noise levels when you don't need it but is a rip-snorting beast when you do. The reason I ditched the Magnaflow was that even when I was just cruising or driving at RPM below 6,000 it made tons more noise and drone than stock, despite yielding no useable power gains at those times. Hopefully, Randy's new exhaust will deliver the best of both worlds.
thats funny coz i was actually thinking of ditching my miltek and getting the magnaflow because i felt the miltek was just tooooooooooooo quiet!!
 
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Old Oct 27, 2005 | 08:55 PM
  #39  
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Gawd. It IS a money pit.
 
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Old Oct 27, 2005 | 11:00 PM
  #40  
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Originally Posted by mr. zero
Randy/Brian, a couple of questions:

1) Will the system be a bolt-on like the UUC, or a clamp-on like most others?

2) Will the butterfly valve be a) user switchable on/off, b) user variable, or c) throttle/exhaust pressure/vacuum sensitive?

Thanks.
To answer your first question, we have not decided yet. This IS still in the prototype stage, so I don’t know for sure. Although we will most likely op for the clamp since that gives the most amount of adjustment. As for the valve operation, there will definitely be a user operated switch in the cabin, and we where also toying with the option of having it rpm activated using the Uni-Chip. However, after seeing the power and torque gains from the prototype, we may scrap that idea since it will take a lot of work to make it work properly. Hope that helps.

-Brian
 
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Old Oct 27, 2005 | 11:07 PM
  #41  
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Originally Posted by Brian@WebbMotorsports
To answer your first question, we have not decided yet. This IS still in the prototype stage, so I don’t know for sure. Although we will most likely op for the clamp since that gives the most amount of adjustment. As for the valve operation, there will definitely be a user operated switch in the cabin, and we where also toying with the option of having it rpm activated using the Uni-Chip. However, after seeing the power and torque gains from the prototype, we may scrap that idea since it will take a lot of work to make it work properly. Hope that helps.

-Brian

indeed.. R32 has a stock exhaust simular to yours.. and has a rpm activated valve that opens above 3500 rpms.. pretty slick.. i keep mine open all the time with a C clamp..
 
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Old Oct 28, 2005 | 06:43 AM
  #42  
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I have a feeling that switch will be "open" all of the time for a lot of the buyers.
 
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Old Oct 28, 2005 | 07:22 AM
  #43  
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Isn't this system essentially a single muffler system with an exhaust cutout?:smile:
 
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Old Oct 28, 2005 | 09:26 PM
  #44  
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Originally Posted by MSFITOY
Isn't this system essentially a single muffler system with an exhaust cutout?:smile:
You make it sound so elementary.

I don't care if it's made of erector set... if it puts up the best gains on the market and looks and sounds good... I'm happy.
 
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Old Oct 28, 2005 | 09:55 PM
  #45  
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Well, so this puts the exhaust mod on hold till they come with the final deal
 
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Old Oct 29, 2005 | 10:24 AM
  #46  
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That really looks nice. I'll have to hold off until the production version details are released.
 
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Old Oct 29, 2005 | 11:51 AM
  #47  
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for what it's worth,......I will be on the Dragon next Saturday hopefully with the exhaust finished and on the car
 
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Old Oct 29, 2005 | 12:32 PM
  #48  
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wow sounds good,
can't wait for the final version.
this bypass sounds like a great idea.
what sort of gains would something like this give if one of these bypass valves was fitted to the cat
i.e. if there was a bypass tube and butterfly for the cat?
I believe the cat is a big restriction on the exhaust if there was a bypass switch fitted, when needed it would close off the cat tube and open the cat bypass?
just thinking out loud.
where does one get such a butterfly valve?
 
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Old Oct 29, 2005 | 02:58 PM
  #49  
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I'm also waiting for that system, I hope it will be a direct fit to an 05 MCS Convertible. :smile:
 
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Old Oct 29, 2005 | 03:17 PM
  #50  
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After inspecting the pictures a bit closer it looks like the butterfly valve is on the right side exhaust tube. I'm guessing two options will allow this, on one hand you have a "straight pipe" coming off the car, this will allow for a LOUD sound. The butterfly valve most likely will have to be used to fine tune the set up a bit better. Not really sure what he has planned but I am guessing some sound files will be shot down the system to find an optimal sound.

The huge muffler on the right side, quite the interesting design, I'm guessing the that exhaust gasses are building up in there and producing more of a deeper sound as well as providing some reduction to the sound.

The "scary" part of the system is upon closer insepction you have smaller tubes coming from the collector, then increasing in size. It looks like you have an interesting idea going on here.

If I could pose an idea about the butterfly valve, why not place a sensor inside the tube to read the "speed" of the exhaust gases, or "pressure", unsure if speed can be measure. Place a micro-controller with some type of setup rather than having a switch. This would allow for the exhaust to "AUTO-TUNE" it's self. I know this would increase the costs of the device, but would allow for a little cleaner setup, rather than using the stock ecu.

Just an idea.
 
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