B&B Exhaust
#41
Contributors
Join Date: Sep 2003
Location: Los Angeles, CA USA
Posts: 1,623
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by katheikia' post='375961' date='Jan 9 2007, 02:47 PM
I am about to purchase a used B&B exhuast from a 2005 545 for my 2006 550. Does anyone know if the 550 uses a different spec exhaust. Will the B&B from the 545 work on my 550? Anyone experience low end torque loss?
Thanks everyone for your help
Thanks everyone for your help
I am sure that the B&B from a 545 can be "made to fit" a 550, but I don't know if it will be plug and play. When I switched to my B&B I did notice a bit of a loss in acceleration, but when I switched back to my stock muffler I realized how significant it really was. I noticed an immediate improvement in acceleration when I re-installed my stock muffler.......the car had a lot better throttle response too.
Before you install a B&B you should know that they do have a problem with annoying resonant frequency vibrations and noise between approximately 1000 and 2000 RPM. I did not realize how much of driving is spent in that RPM range until I put the B&B on my car. It became too annoying so I had to take it off. It sounded great from outside the car, but too much noise and vibrations within that RPM range inside the car.
I guess B&B now realizes that resonance is not a good thing because now they are making mufflers with what they call "Purge Resonance Technology" (PRT) which according to them "eliminates in-cabin noise". Last time I checked their website it seemed like they were only making the RPT mufflers for Porsches. >>>>>CLICK HERE<<<<<
#42
Contributors
Join Date: Sep 2003
Location: Los Angeles, CA USA
Posts: 1,623
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by vegastrashed' post='376466' date='Jan 10 2007, 12:13 PM
I'm such a dope. I've been reading about the 550i update. Once of the new features is that it will have differentiated exhaust. Doesn't this mean that there will be a left and right mufflers? Why not wait a bit and order the new stock 550i exhaust? Then cut the tips and add the quad tips and viola a quad exhaust without the loss of torque and best of all it's OEM.
Also, when I read "...sportier sounding differentiated exhaust pipes..." on BMWusa.com I assumed that it was still a dual (one sided) exhaust but that the sound "differntiated it" from regular non-sport package 550's. I am not so sure that by "differentiated" they mean quads. I guess we'll find out soon.
#43
Contributors
Join Date: Jul 2004
Location: expat in The Netherlands
Posts: 3,486
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: BMW 545iA Black Sapphire
Model Year: 2005
Engine: 545i
Originally Posted by rodybmw' post='380933' date='Jan 20 2007, 11:08 AM
Also, when I read "...sportier sounding differentiated exhaust pipes..." on BMWusa.com I assumed that it was still a dual (one sided) exhaust but that the sound "differntiated it" from regular non-sport package 550's. I am not so sure that by "differentiated" they mean quads. I guess we'll find out soon.
#44
Contributors
Join Date: Sep 2003
Location: Los Angeles, CA USA
Posts: 1,623
Likes: 0
Received 0 Likes
on
0 Posts
Here are some sound clips that I personally taped of a 545i with Eisenmann Racing Type muffler and two 545's with B&B's:
EISENMANN (RACING TYPE):
>>>>>Eisenmann Racing on 545i................Idling and Revving<<<<<
>>>>>Eisenmann Racing on 545i.......Inside Car with driver's window open<<<<<
>>>>>Eisenmann Racing on 545i.....Inside Car with all windows closed<<<<<
>>>>>Eisenmann Racing on 545i.....Outside Car / Accelerating<<<<<
>>>>>Eisenmann Racing on 545i......Outside Car / Passing<<<<<
B&B on a 545i:
>>>>>B&B Triflo on 545i...........Idling and revving<<<<<
>>>>>B&B Triflo on 545i........Inside Car / Windows Closed<<<<<
>>>>>B&B Triflo on 545i...........Outside Car / Accelerating<<<<<
>>>>>B&B Triflo on 545i.........Outside Car / Passing<<<<<
B&B on my car:
Camera attached to the car
EISENMANN (RACING TYPE):
>>>>>Eisenmann Racing on 545i................Idling and Revving<<<<<
>>>>>Eisenmann Racing on 545i.......Inside Car with driver's window open<<<<<
>>>>>Eisenmann Racing on 545i.....Inside Car with all windows closed<<<<<
>>>>>Eisenmann Racing on 545i.....Outside Car / Accelerating<<<<<
>>>>>Eisenmann Racing on 545i......Outside Car / Passing<<<<<
B&B on a 545i:
>>>>>B&B Triflo on 545i...........Idling and revving<<<<<
>>>>>B&B Triflo on 545i........Inside Car / Windows Closed<<<<<
>>>>>B&B Triflo on 545i...........Outside Car / Accelerating<<<<<
>>>>>B&B Triflo on 545i.........Outside Car / Passing<<<<<
B&B on my car:
Camera attached to the car
Thread
Thread Starter
Forum
Replies
Last Post
bestofthebest
Complete Car Sales
4
03-28-2016 02:47 PM