RDSport Quad Exhaust - sound changed
03-31-2007 | 07:21 PM
#1
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From: CA
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 | 08:23 PM
#3
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Posts: 269
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From: CA
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 | 10:12 PM
#4
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From: So. Cal
My Ride: Look At My Signature. -Other Rides and Previous Rides: 04 BMW X3 | 03 BMW 330i (Sold) | 05 BMW M3 (Gone)-
05 Infiniti G35 sedan, Premium Package, Bose Sound, HID, Sports Package, Hardwired Escort Passport x50 Blue Installed, New Transmission Installed, Navigation, Keyless Entry+Start
Other Current Ride.
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 | 12:10 PM
#6
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From: MIAMI B*CH
My Ride: MY RIDE is DA real .-) HAMANN 5 aka BLACK MAMBA born on 16/06/2005/delivered on 05/08/2005 as following:
530dA (steptronic), Black II (JET), leather Dakota auburn black, mapple trim, head-up display, dynamic drive, active steering, adaptive xenon headlights (auto levelling) with headlight washers, alarm, comfort seats with massage function, advanced A/C, big compartment armrest, aux-in, MP3, Logic 7, Radio PRO, CD in-dash+cd changer, power rear sunshades, rear airbags, park distance control, auto dimming folding mirrors, smoking package, shiny shadow line (individual), fold down rear seats, ski bag, sport suspension, run flats on �116-style� rims (Good Year NCT5+), cup holders, debadged, fire extinguishers, additional permanent power outlet, BMW coat hanger, trunk release button (installed by Hobi), GPS tracking device and a big thx 2 Iceman.
Mods done:
� Authentic HAMANN FRONT APRON Including ellipsoid fog lights Item-No.: 10 060 110
� Authentic HAMANN REAR SPOILER Item-No.: 10 060 130,
� Authentic HAMANN HAMANN ALUMINIUM PEDALS For cars with manual gearbox Item-No.: 80 099 100 81,00 For cars with automatic transmission Item-No.: 80 099 120
� Authentic HAMANN FOOT REST In aluminium For left-hand drive vehicles Item No. : 80 099 122
� Authentic HAMANN HAND-BRAKE LEVER In aluminium For left- and right-hand drive cars Item No. : 80 099 216
� Authentic HAMANN Idrive of alu (sorry this is the only one in the World) but you can have it in carbon fiber ,
� Authentic HAMANN EXCLUSIVE FLOORMAT SET In black with HAMANN logo in silver For left-hand drive cars Item-No. : 80 060 120 For right-hand drive cars Item-No. : 80 060
� Authentic HAMANN COVER FOR OIL FILLER CAP In aluminium Item-No.: 80 099 117
� Authentic HAMANN SPORT REAR MUFFLER 4 TAILPIPES Sport rear muffler with four round stainless-steel tailpipes ( � 76mm ) Item-No.: 50 060 111
� Authentic HAMANN new add-on for M pack rear with diffusor for quad pipes -AVAILABLE NOW (http://forums.e60.net/index.php?act=ST&f=22&t=30630&st=0#entry332409)
� ///M steering wheel w Pegasus logo (this will be also changed to three spoke sports)
� ///M pack rear
� HAMANN ECU upgrade 265 HP 608 Nm.
most improtant:
�real and working like a charm forumsbuy real LED tails and PIAA 4700k fogs!!! for HAMANN full front apron you need H3
� CustomAngels, Angel Eyes Brighter than stocks 10X, WHITE & (REd for shows).
� Authentic HAMANN LIGHT-ALLOY WHEELS DESIGN EDITION RACE 20"
Ultra-light forged 3-pieced light-alloy wheel, Cross-spoke-design,Spider in black, titanium, screwing,polished flange
DIMENSIONS : 9.0 J x 20 FA Item No.: 91 207 315
10.5 J x 20 only RA Item No.: 91 207 625
Recommended 20" Complete Wheel Set DESIGN EDITION RACE I went with most aggressive Combination A.10 FA 9.0 J x 20 / RA 10.5 J x 20 with tires: FA 245/30 ZR 20 / RA 285/25 ZR 20
� Authentic HAMANN LOWERING KIT 4 progressive sport springs Lowering by approx. 40 mm FA, 20 mm RA Item-No.: 20 060 125
� Authentic HAMANN TIRE - PRESSURE CHECK SENSOR SYSTEM
� Authentic HAMANN SIDE SILLS Item-No.: 10 060 120
� Authentic HAMANN REAL CF ROOF SPOLIER Item-No.: 10 060 235
� Authentic HAMANN AIRBAG SPORT STEERING WHEEL 3-SPOKE Three-spoke design w their SMG paddles (For assembly O.E. airbag in exchange)
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!!!!!!!!!!!!!!!!!!! and of course !!!!!!!!!!!!!!!!!
E60.net Clings
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� Individual leather interior (auburn+auburn alcantara)... and drive with sheer drivin' pleasure ... until 2009/2010 F10 comes or E60 possibly a 540d V8 diesel early in 2009 badly juiced!
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 | 12:13 PM
#7
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From: Italy, Milano
My Ride: 545i SMG with Limited Slip Differential
Model Year: 2005
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 | 12:21 PM
#8
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From: Chalandri/Athina/Hellas
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 | 12:42 PM
#9
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From: Italy, Milano
My Ride: 545i SMG with Limited Slip Differential
Model Year: 2005
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 | 12:48 PM
#10
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From: Chalandri/Athina/Hellas
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