MINI2

presurized mini · Feb 3rd, 2003, 11:04 PM

Yeah i would say around 3000 to 3500,or anywhere around 70mph,and up to about 90mph.I drove to charlotte today and thats where i noticed it the most.

Bluesmaster · Feb 4th, 2003, 12:56 AM

Quote:

Originally posted by obehave
I've found that for me the offending frequency was at 3K RPMS ±200.
Is this true for you? I'm trying to get a feel for what may be perceived as the most offensive.

Obehave,

I agree totally with the above offending frequency range. I also feel it gets louder as it warms up. There are times when I love it but if Dynamat doesn't cut the sound enough I'll probably have to change it out. I'll try the boot area and the hatch and see how much it calms down. Did you add more in those areas? Layering is supposed to triple the effect of the Dynamat. I'm also wondering if loose pieces over the battery on a stiff cardstock base would help. Or would that be a problem, covering the battery? Your earlier post mentioned you stuffed some in the boot doors. Did you stick it down to the floor area or lay it in loose? Apparently doing the doors made quite a difference. That would be the last resort for me if the other areas don't get it.

Thanks in advance,
Bluesmaster

obehave · Feb 4th, 2003, 01:31 AM

Quote:

Originally posted by Bluesmaster
Obehave,

I agree totally with the above offending frequency range. I also feel it gets louder as it warms up. There are times when I love it but if Dynamat doesn't cut the sound enough I'll probably have to change it out. I'll try the boot area and the hatch and see how much it calms down. Did you add more in those areas? Layering is supposed to triple the effect of the Dynamat. I'm also wondering if loose pieces over the battery on a stiff cardstock base would help. Or would that be a problem, covering the battery? Your earlier post mentioned you stuffed some in the boot doors. Did you stick it down to the floor area or lay it in loose? Apparently doing the doors made quite a difference. That would be the last resort for me if the other areas don't get it.

Thanks in advance,
Bluesmaster

Well we have a consensus anyway

Just a single layer in the boot and the hatch. Did a single layer in the doors today. Helped the sound quality of the speakers. nice suprise. Car sounds good. Less hollow vibration on rough bits of road.
I've been thinking of the cover for the battery. I have some masonite and some mat left over. I'll do a cover this weekend.
Stuck it down hard. Make sure you eliminate any air bubbles that you can.

I did the 2 little boot pockets as a goof since I had about a half square foot left.

Honestly doing the doors doesn't do much for the exhaust. Doubling up the boot or under the back seats would be more useful.

Took my daughter for a ride tonight and she noticed the difference setting in the back.

Cape Cod MINI · Feb 4th, 2003, 02:08 AM

My Magnaflow still hasn't been shipped. Ordered it 1/27/03 and they charged the c.c. right away, but just found out that it'll ship on 2/5/03. With all you guys putting in Dynamat and talking about taking the Magnaflow off because it's so loud.........I think I'm getting worried.
"At its worst", "offending frequency", "I'm going to get rid of it"........
Well, that does it, I just made up mind, I'm cancelling the order tomorrow.

jcsinnh · Feb 4th, 2003, 02:57 AM

CCMini and I have been having this conversation about the need for a less restrictive exhaust than the stock to handle possible increases in pressure coming from engines with better-than-stock air induction/filter systems. If the "threat" of offending noise levels DOES exist as I think we all will agree that it does, can the stock exhaust be left and handle any +in pressure? European Car a while back measured other exhausts but my copy was stolen and I've forgotten the results. Any thoughts?

Cape Cod MINI · Feb 4th, 2003, 03:16 AM

Ok, maybe I spoke too soon. Just read a thread over at MCO regarding the Magnaflow's need to "mellow" at around 1000 miles. Seems a note from an engineer at Magnaflow says it'll get better. Post is by **-mini-ero way down the bottom of page two of the thread.
Here's the link: http://www.minicooperonline.com/modu...29&start=25&40

Romhog · Feb 4th, 2003, 03:46 AM

I dont believe it. What is the material that has to "break in" You can't get something for nothing. Has anyone ever heard a Formula-1 car in real life. That's an extreme example, but when you go with flowthough, its the price you pay.

The Helmet · Feb 4th, 2003, 04:26 AM

moan moan moan moan moan moan moan mona

I'm sorry but if you buy a performance exhaust and moan about the noise is makes then there is no hope for you.

It's like buying a wheel and saying that it is too round!

Please fit it and have fun

Regards

Andy

P.S. no harm intended and I should be in bed by now.

Keith · Feb 4th, 2003, 01:12 PM

Andy, the world is not so black and white as that!
Not many of us are full-out performance nuts who will sacrifice everything to go as fast as possible. There's nothing wrong with wanting as much performance as you can get without compromising *too* far on comfort.

minimc · Feb 4th, 2003, 05:07 PM

Keith - I see your point & Andy's

Andy I agree...
It's frustrating to see folks jump on the bandwagon then jump off just as quickly - complaining about the products shortcomings when the real issue is thier own impulse short-sightedness.

My thought for those who are now disappointed is "what in the heck were you expecting?" In this life there are very few exchanges where you give away nothing and receive X in return. When you are looking for performance its almost always a compromise - eg: lower fuel milage or harder ride. In this case we're talking sound levels.

FWIW
When I take delivery of my S on Thursday I'll be bolting on my BMP intake & Magnaflow. When I get some time (weekend?) I will take a spectrum analyser into the car & measure sound levels at each rev range & record the significant resonant frequencies (where it gets loud). From this I'll be able to figure out what I/we might use to damp unwanted noise.

mc

Albert · Feb 4th, 2003, 06:58 PM

Quote:

Originally posted by minimc
My thought for those who are now disappointed is "what in the heck were you expecting?"

I think I might be the only one who thinks my Magnaflow is too QUIET!!

Middle resonator delete coming soon!

Romhog · Feb 4th, 2003, 09:43 PM

Stick a bananna in the left tail pipe, that will make it half as loud!
No serious. You can only fight physics so far people.

podger · Feb 6th, 2003, 12:26 PM

Quote:

Originally posted by The Helmet
Please fit it and have fun

Fitted and having lots!!!

Albert · Feb 6th, 2003, 06:57 PM

Obehave or anyone else:

Do you know what kind of stainless steal our Magnaflow piping is made out of? Just want to fabricate the straight pipe out of the exact same material.

Thanks,

Albert

obehave · Feb 6th, 2003, 09:19 PM

Quote:

Originally posted by Albert
Obehave or anyone else:

Do you know what kind of stainless steal our Magnaflow piping is made out of? Just want to fabricate the straight pipe out of the exact same material.

Thanks,

Albert

Best I could get from their "Tech Support?" is that it's in the mid 400's I'm guessing T-430.
You'd think they might be a little more accurate.

Albert · Feb 6th, 2003, 09:49 PM

Hmmmm, that's a bit dissappointing. Wouldn't mid-400 grade steel but susceptable to corrosion in coastal cities or road salt?

Albert · Feb 6th, 2003, 10:18 PM

Ok, I got a number from Ellis (who by the way is one of the most responsive aftermarket guys I've ever had the pleasure of emailing!) at Magnaflow. It's 436SS.

Albert · Feb 6th, 2003, 11:06 PM

Quote:

Originally posted by obehave
Hvae fun with the resonator delete. You do of course know everyone is going to ask for before/after dyno results. And then of course argue(debate) the findings

Yes, but maybe I can stifle some of that curiosity by saying that I've already been notified by Magnaflow that there will be very little difference in dyno HP numbers.

Oh well, I'm only doing it for additional volume anyway.

On another note, I did dyno the MCS w/the Magnaflow last Saturday and it recorded between 158-160 peak HP at the wheels! This was done with approx. 1800 miles on the ticker. Unfortunately, I don't have a baseline reading b/c I was too impatient to put on the exhaust, and we were still hovering at around the break-in period.

Anyway, I'll post more specifics and photos on a separate thread.

Ann Jones · Feb 6th, 2003, 11:15 PM

I Did It!!

My brother says if I'mn going to have a british car as my everyday car I need to know a little bit about working on it.
So, with him "back seat wrenching", I Did it by my self.
OK, he did help me get the stock exaust out from under the car and get those awful bolts loose from the cat!

It took me 2 1/2 hours from start to finish. I don't think I want to do this sort of thing for a living, but I am proud.

I'll drive it tomorrow and see what it sounds like. I am planning on doing the dynamat thing though...

Ann Jones

Albert · Feb 6th, 2003, 11:29 PM

Quote:

Originally posted by obehave
Meant to askyou. Let us know if it seems to shift all the cabin noise rearward.
I'm curious how much the resonator pumps into the cabin right there by your feet.

Good point. I'll make sure to make a note of it.

Feb 3rd, 2003, 11:04 PM	#41
presurized mini MINI2 Regular Join Date: Sep 2002 Location: Greenville S.C Local Time: 05:15 PM Posts: 90 Offline	Yeah i would say around 3000 to 3500,or anywhere around 70mph,and up to about 90mph.I drove to charlotte today and thats where i noticed it the most. 02 MCS Electric blue white stripes R90's 91 GMC Syclone 02 Golf VR6 99 Ford F350

Feb 4th, 2003, 12:56 AM	#42 (permalink)
Bluesmaster MINI2 Newbie Join Date: Dec 2002 Location: Central Ohio Local Time: 04:15 PM Posts: 43 Offline	Re: Info please Quote: Originally posted by obehave I've found that for me the offending frequency was at 3K RPMS ±200. Is this true for you? I'm trying to get a feel for what may be perceived as the most offensive. Obehave, I agree totally with the above offending frequency range. I also feel it gets louder as it warms up. There are times when I love it but if Dynamat doesn't cut the sound enough I'll probably have to change it out. I'll try the boot area and the hatch and see how much it calms down. Did you add more in those areas? Layering is supposed to triple the effect of the Dynamat. I'm also wondering if loose pieces over the battery on a stiff cardstock base would help. Or would that be a problem, covering the battery? Your earlier post mentioned you stuffed some in the boot doors. Did you stick it down to the floor area or lay it in loose? Apparently doing the doors made quite a difference. That would be the last resort for me if the other areas don't get it. Thanks in advance, Bluesmaster

Feb 4th, 2003, 01:31 AM	#43 (permalink)
obehave Mini Mod Join Date: Sep 2002 Local Time: 04:15 PM Posts: 9,315 Offline	Re: Re: Info please Quote: Originally posted by Bluesmaster Obehave, I agree totally with the above offending frequency range. I also feel it gets louder as it warms up. There are times when I love it but if Dynamat doesn't cut the sound enough I'll probably have to change it out. I'll try the boot area and the hatch and see how much it calms down. Did you add more in those areas? Layering is supposed to triple the effect of the Dynamat. I'm also wondering if loose pieces over the battery on a stiff cardstock base would help. Or would that be a problem, covering the battery? Your earlier post mentioned you stuffed some in the boot doors. Did you stick it down to the floor area or lay it in loose? Apparently doing the doors made quite a difference. That would be the last resort for me if the other areas don't get it. Thanks in advance, Bluesmaster Well we have a consensus anyway Just a single layer in the boot and the hatch. Did a single layer in the doors today. Helped the sound quality of the speakers. nice suprise. Car sounds good. Less hollow vibration on rough bits of road. I've been thinking of the cover for the battery. I have some masonite and some mat left over. I'll do a cover this weekend. Stuck it down hard. Make sure you eliminate any air bubbles that you can. I did the 2 little boot pockets as a goof since I had about a half square foot left. Honestly doing the doors doesn't do much for the exhaust. Doubling up the boot or under the back seats would be more useful. Took my daughter for a ride tonight and she noticed the difference setting in the back.

Feb 4th, 2003, 02:08 AM	#44 (permalink)
Cape Cod MINI Exposing the Beast Join Date: Oct 2001 Location: Cape Cod, MA Local Time: 05:15 PM Posts: 5,337 Offline	My Magnaflow still hasn't been shipped. Ordered it 1/27/03 and they charged the c.c. right away, but just found out that it'll ship on 2/5/03. With all you guys putting in Dynamat and talking about taking the Magnaflow off because it's so loud.........I think I'm getting worried. "At its worst", "offending frequency", "I'm going to get rid of it"........ Well, that does it, I just made up mind, I'm cancelling the order tomorrow. Missing my buddies Dan and Ed but glad I have two angel buddies, And on a quest to Right Secco's Wrongs

Feb 4th, 2003, 02:57 AM	#45 (permalink)
jcsinnh MINI2 Master Join Date: Jan 2003 Location: fools & tools proof Local Time: 04:15 PM Posts: 4,845 Offline	CCMini and I have been having this conversation about the need for a less restrictive exhaust than the stock to handle possible increases in pressure coming from engines with better-than-stock air induction/filter systems. If the "threat" of offending noise levels DOES exist as I think we all will agree that it does, can the stock exhaust be left and handle any +in pressure? European Car a while back measured other exhausts but my copy was stolen and I've forgotten the results. Any thoughts? Lawdy, Lawdy, the Cross I bear.

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Feb 4th, 2003, 03:16 AM	#46 (permalink)
Cape Cod MINI Exposing the Beast Join Date: Oct 2001 Location: Cape Cod, MA Local Time: 05:15 PM Posts: 5,337 Offline	Ok, maybe I spoke too soon. Just read a thread over at MCO regarding the Magnaflow's need to "mellow" at around 1000 miles. Seems a note from an engineer at Magnaflow says it'll get better. Post is by -mini-ero way down the bottom of page two of the thread. Here's the link: http://www.minicooperonline.com/modu...29&start=25&40 Missing my buddies Dan and Ed but glad I have two angel buddies, And on a quest to Right Secco's Wrongs**

Feb 4th, 2003, 03:46 AM	#47 (permalink)
Romhog My mini is my casket Join Date: Sep 2002 Location: Dayton, Ohio Local Time: 04:15 PM Posts: 499 Offline	I dont believe it. What is the material that has to "break in" You can't get something for nothing. Has anyone ever heard a Formula-1 car in real life. That's an extreme example, but when you go with flowthough, its the price you pay.

Feb 4th, 2003, 04:26 AM	#48 (permalink)
The Helmet MINI2 Regular Join Date: Oct 2002 Location: Tamworth, West Midla Local Time: 09:15 PM Posts: 52 Offline	moan moan moan moan moan moan moan mona I'm sorry but if you buy a performance exhaust and moan about the noise is makes then there is no hope for you. It's like buying a wheel and saying that it is too round! Please fit it and have fun Regards Andy P.S. no harm intended and I should be in bed by now.

Feb 4th, 2003, 01:12 PM	#49 (permalink)
Keith MINI2 Senior Join Date: Aug 2001 Location: SW Florida Local Time: 09:15 PM Posts: 683 Offline	Andy, the world is not so black and white as that! Not many of us are full-out performance nuts who will sacrifice everything to go as fast as possible. There's nothing wrong with wanting as much performance as you can get without compromising too far on comfort. 2007 DS/W MCS LSD, sport suspension, Enkei RPM2 wheels 2002 EB/W MCS Sport package, Rogue intake, Borla exhaust, 15% pulley & Madness sway bar

Feb 4th, 2003, 05:07 PM	#50 (permalink)
minimc MINI2 Senior My Classifieds Join Date: Feb 2002 Local Time: 04:15 PM Posts: 457 Offline	Keith - I see your point & Andy's Andy I agree... It's frustrating to see folks jump on the bandwagon then jump off just as quickly - complaining about the products shortcomings when the real issue is thier own impulse short-sightedness. My thought for those who are now disappointed is "what in the heck were you expecting?" In this life there are very few exchanges where you give away nothing and receive X in return. When you are looking for performance its almost always a compromise - eg: lower fuel milage or harder ride. In this case we're talking sound levels. FWIW When I take delivery of my S on Thursday I'll be bolting on my BMP intake & Magnaflow. When I get some time (weekend?) I will take a spectrum analyser into the car & measure sound levels at each rev range & record the significant resonant frequencies (where it gets loud). From this I'll be able to figure out what I/we might use to damp unwanted noise. mc

Feb 4th, 2003, 06:58 PM	#51 (permalink)
Albert MINI2 Regular Join Date: Jun 2002 Location: Costa Mesa, CA Local Time: 02:15 PM Posts: 295 Offline	Quote: Originally posted by minimc My thought for those who are now disappointed is "what in the heck were you expecting?" I think I might be the only one who thinks my Magnaflow is too QUIET!! Middle resonator delete coming soon!

Feb 4th, 2003, 09:43 PM	#52 (permalink)
Romhog My mini is my casket Join Date: Sep 2002 Location: Dayton, Ohio Local Time: 04:15 PM Posts: 499 Offline	Stick a bananna in the left tail pipe, that will make it half as loud! No serious. You can only fight physics so far people.

Feb 6th, 2003, 12:26 PM	#53 (permalink)
podger MINI2 Regular Join Date: Oct 2002 Location: There , over there, Local Time: 09:15 PM Posts: 98 Offline	Quote: Originally posted by The Helmet Please fit it and have fun Fitted and having lots!!! Cooper S,200Bhp+ Graham Goode Racing/Superchip Conversion, MagnaFlow Exhaust,British Racing Green,White Roof,Chilli Pack ,Gravity Full Leather, 17" S Spoke Alloys,Multi-Function Strg Wheel,Elec. Pan. Glass Roof,Heated Seats,Park Ctrl,Auto Air,SatNav,Radio Boost,Cd Changer,Bonnet Stripes by Action Graphics Ltd..... Other Toys:Suzuki GSX1300R Hayabusa FullRace 4.7 litre(TVR)375Bhp Morgan +8

Feb 6th, 2003, 06:57 PM	#54 (permalink)
Albert MINI2 Regular Join Date: Jun 2002 Location: Costa Mesa, CA Local Time: 02:15 PM Posts: 295 Offline	Obehave or anyone else: Do you know what kind of stainless steal our Magnaflow piping is made out of? Just want to fabricate the straight pipe out of the exact same material. Thanks, Albert

Feb 6th, 2003, 09:19 PM	#55 (permalink)
obehave Mini Mod Join Date: Sep 2002 Local Time: 04:15 PM Posts: 9,315 Offline	Quote: Originally posted by Albert Obehave or anyone else: Do you know what kind of stainless steal our Magnaflow piping is made out of? Just want to fabricate the straight pipe out of the exact same material. Thanks, Albert Best I could get from their "Tech Support?" is that it's in the mid 400's I'm guessing T-430. You'd think they might be a little more accurate.

Feb 6th, 2003, 09:49 PM	#56 (permalink)
Albert MINI2 Regular Join Date: Jun 2002 Location: Costa Mesa, CA Local Time: 02:15 PM Posts: 295 Offline	Hmmmm, that's a bit dissappointing. Wouldn't mid-400 grade steel but susceptable to corrosion in coastal cities or road salt?

Feb 6th, 2003, 10:18 PM	#57 (permalink)
Albert MINI2 Regular Join Date: Jun 2002 Location: Costa Mesa, CA Local Time: 02:15 PM Posts: 295 Offline	Ok, I got a number from Ellis (who by the way is one of the most responsive aftermarket guys I've ever had the pleasure of emailing!) at Magnaflow. It's 436SS.

Feb 6th, 2003, 11:06 PM	#58 (permalink)
Albert MINI2 Regular Join Date: Jun 2002 Location: Costa Mesa, CA Local Time: 02:15 PM Posts: 295 Offline	Quote: Originally posted by obehave Hvae fun with the resonator delete. You do of course know everyone is going to ask for before/after dyno results. And then of course argue(debate) the findings Yes, but maybe I can stifle some of that curiosity by saying that I've already been notified by Magnaflow that there will be very little difference in dyno HP numbers. Oh well, I'm only doing it for additional volume anyway. On another note, I did dyno the MCS w/the Magnaflow last Saturday and it recorded between 158-160 peak HP at the wheels! This was done with approx. 1800 miles on the ticker. Unfortunately, I don't have a baseline reading b/c I was too impatient to put on the exhaust, and we were still hovering at around the break-in period. Anyway, I'll post more specifics and photos on a separate thread.

Feb 6th, 2003, 11:15 PM	#59 (permalink)
Ann Jones MINI2 Regular Join Date: May 2002 Location: Southern Arizona Local Time: 02:15 PM Posts: 53 Offline	Magnaflow install I Did It!! My brother says if I'mn going to have a british car as my everyday car I need to know a little bit about working on it. So, with him "back seat wrenching", I Did it by my self. OK, he did help me get the stock exaust out from under the car and get those awful bolts loose from the cat! It took me 2 1/2 hours from start to finish. I don't think I want to do this sort of thing for a living, but I am proud. I'll drive it tomorrow and see what it sounds like. I am planning on doing the dynamat thing though... Ann Jones Ms Mini

Feb 6th, 2003, 11:29 PM	#60 (permalink)
Albert MINI2 Regular Join Date: Jun 2002 Location: Costa Mesa, CA Local Time: 02:15 PM Posts: 295 Offline	Quote: Originally posted by obehave Meant to askyou. Let us know if it seems to shift all the cabin noise rearward. I'm curious how much the resonator pumps into the cabin right there by your feet. Good point. I'll make sure to make a note of it.

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