Borla for the 545i
08-24-2005, 08:17 AM
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Greetings!
Borla came highly recommended by a tuner colleague of mine but after seeing that there was not an application-specific offering from them, i did a little more research. It seems that the inlet size and the overall dimensions of the exhaust are what matters and any decent muffler shop should be able to take care of the custom fitting. I contacted the tech at Borla (name is Harley), and he recommended the Borla ProXS part number 40349. The cost is $159 + the amount for whatever tips you want to have. More information can be found here: http://www.borla.com/proxs/
I asked why they were less expensive and I was told that they produce these in higher quantities because this is the universal line. They also said that the ProXS series and TurboXL series are the same muffler but one is Badged with both the Borla and ProXS logos. Both have the million mile warranty and both are made of the same stainless steel.
Much preferring the Borla sound, I think I may take a shot on ordering one and having it custom fit. Everything is reversable so worst case, I'm out a few bucks and a bit of my time.
If anyone has experience with this implementation or any words of wisdom, I would love to know.
Thanks!
Borla came highly recommended by a tuner colleague of mine but after seeing that there was not an application-specific offering from them, i did a little more research. It seems that the inlet size and the overall dimensions of the exhaust are what matters and any decent muffler shop should be able to take care of the custom fitting. I contacted the tech at Borla (name is Harley), and he recommended the Borla ProXS part number 40349. The cost is $159 + the amount for whatever tips you want to have. More information can be found here: http://www.borla.com/proxs/
I asked why they were less expensive and I was told that they produce these in higher quantities because this is the universal line. They also said that the ProXS series and TurboXL series are the same muffler but one is Badged with both the Borla and ProXS logos. Both have the million mile warranty and both are made of the same stainless steel.
Much preferring the Borla sound, I think I may take a shot on ordering one and having it custom fit. Everything is reversable so worst case, I'm out a few bucks and a bit of my time.
If anyone has experience with this implementation or any words of wisdom, I would love to know.
Thanks!
08-24-2005, 09:34 AM
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Logic7 Audio System
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Active Steering
Split-Floding Rear Seats
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M5 Spoiler
Illuminated Door Sills
Originally Posted by qtrII6' date='Aug 24 2005, 01:07 PM
i wonder what it would sound like be careful sound quality should matter =) put some sound clips when u are done with it
[snapback]162918[/snapback]
08-24-2005, 09:58 AM
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My Ride: '05 545i, silver gray, black leather with anthracite maple wood, sport package, premium sound, navigation, cold weather package, electric rear sunshade, folding rear seat, satellite radio prep, PIAA 4150K fogs, red rear reflectors, hardwired Valentine One
It seems to me that using a "universal" muffler isn't the way to go. While it may fit from a physical size perspective, each engine has unique characteristics with regard to back pressure, etc. so you could end up reducing power...or worse.
08-24-2005, 10:26 AM
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Sport Package
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Sirius Radio
Logic7 Audio System
Navigation
Active Steering
Split-Floding Rear Seats
Rear Sunshade
M5 Spoiler
Illuminated Door Sills
Originally Posted by stream' date='Aug 24 2005, 01:58 PM
It seems to me that using a "universal" muffler isn't the way to go.? While it may fit from a physical size perspective, each engine has unique characteristics with regard to back pressure, etc. so you could end up reducing power...or worse.
[snapback]162934[/snapback]
08-30-2005, 05:03 PM
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My Ride: 2005 545i Titanium Gray Metallic
Sport Package
Cold Weather Package
Heads-Up Display
Sirius Radio
Logic7 Audio System
Navigation
Active Steering
Split-Floding Rear Seats
Rear Sunshade
M5 Spoiler
Illuminated Door Sills
I've been working with my local shop & Borla and we have determined that the Turbo XL is a better match. I am still awaiting flow data from the various muffler manufacturers but went ahead and ordered the unit. Set for install on Wednesday. If anyone has baseline dyno data for a 2005 545i/6sp, that would be great. Probably won't get to dyno until the beginning of next week as we are getting the remnants of Katrina today and tomorrow and it will be very humid.
08-31-2005, 11:09 AM
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My Ride: 2005 545i Titanium Gray Metallic
Sport Package
Cold Weather Package
Heads-Up Display
Sirius Radio
Logic7 Audio System
Navigation
Active Steering
Split-Floding Rear Seats
Rear Sunshade
M5 Spoiler
Illuminated Door Sills
What a day... Took the car in and it was determined that the only way to make the Borla fit would end up looking bad due to the number of welds and bends. Sorry to say that Borla fans will have to wait for an application-specific model.
In the interest of moving forward in my quest for the perfect after-market exhaust, I have decided to go with an AC Schnitzer, which was ordered today and should arrive by the middle of next week. I will post pics & soundclips after the installation.
In the interest of moving forward in my quest for the perfect after-market exhaust, I have decided to go with an AC Schnitzer, which was ordered today and should arrive by the middle of next week. I will post pics & soundclips after the installation.
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