RDSport Quad Exhaust - sound changed
03-31-2007, 06:21 PM
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My Ride: 2004 545iA - Built date 09/03, Sport Package, Alpine White III, Grey Interior, Cold Weather Package, PDC, Rear Electric Sunshades, Comfort Seats, Logic 7, Chromed BMW Style 124 18x8, 18x9 Wheels, M-Tech Aero Kit, Rear Trunk Decklid Spoiler, Tinted Windows, Valentine One
Modifications: RDSport Quad Exhaust, 20x8.5 and 20x11 HRE 943R, Vorsteiner CF Decklid, Dinan CAI
I installed the M5 bumper on my 545i and my muffler shop had to re-pipe the left and right inner pipes of my RDSport Quad Exhausts by extending the inner pipes a few inches to make it fit. However, afterwards I noticed it does not sound the same as before and it does not appear to be as loud as before. Anyone have any thoughts as to why?
The same diameter of stainless steel pipes were used and the pipes were madrigal bent to the same angle. The biggest dfference is probably the right muffler is comprise of 2 pieces of madrigal bent pipes as opposed to the original which is just one piece. I can't imagine this can make that much of a difference.
Thanks in advance.
The same diameter of stainless steel pipes were used and the pipes were madrigal bent to the same angle. The biggest dfference is probably the right muffler is comprise of 2 pieces of madrigal bent pipes as opposed to the original which is just one piece. I can't imagine this can make that much of a difference.
Thanks in advance.
03-31-2007, 07:23 PM
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My Ride: 2004 545iA - Built date 09/03, Sport Package, Alpine White III, Grey Interior, Cold Weather Package, PDC, Rear Electric Sunshades, Comfort Seats, Logic 7, Chromed BMW Style 124 18x8, 18x9 Wheels, M-Tech Aero Kit, Rear Trunk Decklid Spoiler, Tinted Windows, Valentine One
Modifications: RDSport Quad Exhaust, 20x8.5 and 20x11 HRE 943R, Vorsteiner CF Decklid, Dinan CAI
Originally Posted by alpinewhite' post='409233' date='Mar 31 2007, 09:47 PM
post sound clips/ pics if possible 
03-31-2007, 09:12 PM
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My Ride: Look At My Signature. -Other Rides and Previous Rides: 04 BMW X3 | 03 BMW 330i (Sold) | 05 BMW M3 (Gone)-
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m5 rear 
Pics pics pics plz. This I gotta see and hear.
Pics pics pics plz. This I gotta see and hear.
04-02-2007, 11:10 AM
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My Ride: MY RIDE is DA real .-) HAMANN 5 aka BLACK MAMBA born on 16/06/2005/delivered on 05/08/2005 as following:
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Originally Posted by remuse' post='409226' date='Apr 1 2007, 04:21 AM
I installed the M5 bumper on my 545i and my muffler shop had to re-pipe the left and right inner pipes of my RDSport Quad Exhausts by extending the inner pipes a few inches to make it fit. However, afterwards I noticed it does not sound the same as before and it does not appear to be as loud as before. Anyone have any thoughts as to why?
The same diameter of stainless steel pipes were used and the pipes were madrigal bent to the same angle. The biggest dfference is probably the right muffler is comprise of 2 pieces of madrigal bent pipes as opposed to the original which is just one piece. I can't imagine this can make that much of a difference.
Thanks in advance.
The same diameter of stainless steel pipes were used and the pipes were madrigal bent to the same angle. The biggest dfference is probably the right muffler is comprise of 2 pieces of madrigal bent pipes as opposed to the original which is just one piece. I can't imagine this can make that much of a difference.
Thanks in advance.
04-02-2007, 11:13 AM
#7
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Originally Posted by bmw4life' post='409261' date='Apr 1 2007, 07:12 AM
m5 rear
Pics pics pics plz. This I gotta see and hear.
Pics pics pics plz. This I gotta see and hear.
Check my signature .
In next days I will install a black painted grill in the bumper hole .
04-02-2007, 11:21 AM
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Originally Posted by AlexFW' post='409686' date='Apr 2 2007, 10:13 PM
Check my signature .
In next days I will install a black painted grill in the bumper hole .
In next days I will install a black painted grill in the bumper hole .
04-02-2007, 11:42 AM
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Originally Posted by nicke60gre' post='409687' date='Apr 2 2007, 09:21 PM
Very good move Alex!! It will look even better than M5
In next weeks I will open a thread in the group buy section : if there will be at least 5 people interested that factory will put into production the exhaust, that give 0.3s on the 0-100 and about 1s on the 0-200 .
I have clips of stock car, car with new exhaust and when I will have replaced catalyst and headers I will make definitive clips .
Then a dyno test : I hope in 400 HP :-) .
And I have on order 3.23 final drive ratio (-11% from stock 2.93) in US .
Nice pic in signature, nick!
04-02-2007, 11:48 AM
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Originally Posted by AlexFW' post='409697' date='Apr 2 2007, 10:42 PM
And I have on order 3.23 final drive ratio (-11% from stock 2.93) in US .
It will affect 11% ..lower top speed as well