People Retrofitting M Sport Bumper
#1
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Join Date: Jan 2005
Location: South Africa
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My Ride: 545i Mystic Blue/Black Leather Type 124 Wheels
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Was talking to the head mechanic at my dealers panel shop today, and we got to talking about retrofitting the M Sport bumper.
He says ne musnt just change the bumper, but that the M sport uses different air ducts behind the bumper, and these have to be changed aswell otherwise the engine and other parts will not get the correct airflow
On the following picture of airducts the following are different for the M sport
1) Air Duct
7) Cover Bottom
14) Air Duct top
15) Air duct top
16) Front air duct bottom
He says ne musnt just change the bumper, but that the M sport uses different air ducts behind the bumper, and these have to be changed aswell otherwise the engine and other parts will not get the correct airflow
On the following picture of airducts the following are different for the M sport
1) Air Duct
7) Cover Bottom
14) Air Duct top
15) Air duct top
16) Front air duct bottom
![](http://www.realoem.com/bmw/diagrams/m/5474.png)
#2
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Join Date: Dec 2004
Location: Netherlands
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My Ride: 2011 520dA coming up.
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True.
I bought the complete retrofit kit and they are all included. Even the foglights are included, though i couldn't see a difference with the regular ones.
There's an incredible amount of screws, plastics, covers, etc. They even include a new lisence plate holder.
The only things they don't include is the inner mudguards. You either cut them of or order new. One more thing not included in the kit is the rear diffusor.
I bought the complete retrofit kit and they are all included. Even the foglights are included, though i couldn't see a difference with the regular ones.
There's an incredible amount of screws, plastics, covers, etc. They even include a new lisence plate holder.
The only things they don't include is the inner mudguards. You either cut them of or order new. One more thing not included in the kit is the rear diffusor.
#4
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Join Date: Dec 2004
Location: Winter Park, FL
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My Ride: 2005 545i (SMG)
Titanium Gray
Black Interior, Anthracite Trim
M-tech kit
Sport Package
Premium Sound
Satellite Radio
Active Cruise
Comfort Seats
Navigation
Folding rear seats
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What is the rear diffusor? I have the M kit, and they told me that there were 2 parts on the instruction manual I sent them which were not in the kit.
1> Top Air Guide
2> Right Trim (for cars with Active Cruise)
We installed the kit without these pieces, and it seem fine. Surprisingly, my Active Cruise works even though the radar gun is now behind a plastic trim piece. I have ordered the correct trim for AC, but I may not even use it. If my Active Cruise works perfectly without having to be visible.... then what would be the point?
1> Top Air Guide
2> Right Trim (for cars with Active Cruise)
We installed the kit without these pieces, and it seem fine. Surprisingly, my Active Cruise works even though the radar gun is now behind a plastic trim piece. I have ordered the correct trim for AC, but I may not even use it. If my Active Cruise works perfectly without having to be visible.... then what would be the point?
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