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GardenBeast
04-30-2008, 03:41 PM
does anyone know if you can mod a normal bumper to put an ///m rear diffuser in it? i can get the diffuser locally, pretty cheap (if the guy still has it... )
FierySphere
04-30-2008, 03:59 PM
You can mod the M3 diffuser to fit (cheaper than hacking the bumper cover).
BavAuto also sells a direct fit M3-style one for about $100.
LuvMy328is
04-30-2008, 04:29 PM
I have the one from BavAuto and It is decent. I gave it a 7/10 overall in my review. I plan on trimming it a bit for a better fit, but I have had more important things to do. It's a great alternative to a new rear bumper.
~Phil
GardenBeast
04-30-2008, 05:32 PM
that's what i figured... i hope this all applies to a ti rear bumper.
bmw4wmb
04-30-2008, 06:22 PM
I have the one from BavAuto and It is decent. I gave it a 7/10 overall in my review. I plan on trimming it a bit for a better fit, but I have had more important things to do. It's a great alternative to a new rear bumper.
~Phil
+1....pretty much sums it up. I have the M-style diffuser for non-M rear bumper as well. It fits OK, but not as well as a full M bumper w/M diffuser.

It does look 1000 times better though, especially if you have an aftermarket exhaust.
johnnybayonne
04-30-2008, 06:46 PM
does anyone know if you can mod a normal bumper to put an ///m rear diffuser in it? i can get the diffuser locally, pretty cheap (if the guy still has it... )

Yes! I did my rear bumper, you just remove the exsisting flat panel & install the Diffuser!
johnnybayonne,

Without diffuser:

http://i205.photobucket.com/albums/bb7/johnnybayonne/DSC00934-1.jpg

With diffuser:
http://i205.photobucket.com/albums/bb7/johnnybayonne/blacked008.jpg
bmw4wmb
04-30-2008, 06:50 PM
^^Hey JB, isn't that the diffuser for the non-M bumper? I'm just asking because it sticks out a bit at the top like mine does.

I thought you had to cut a bit off of the actual M diffuser to make it fit on our bumpers.
johnnybayonne
04-30-2008, 06:51 PM
^^Hey JB, isn't that the diffuser for the non-M bumper? I'm just asking because it sticks out a bit at the top like mine does.

I thought you had to cut a bit off of the actual M diffuser to make it fit on our bumpers.

yes it is!
jb,
H2oiamwater
04-30-2008, 06:52 PM
I have the one from BavAuto and It is decent. I gave it a 7/10 overall in my review. I plan on trimming it a bit for a better fit, but I have had more important things to do. It's a great alternative to a new rear bumper.
~Phil

Its a M tec one...the ones for m3s take some trimming to make it fit...

Mine doesnt go all the way in...so i gotta figure out what to trim to make it go in another half inch maybe. if its super cheap then i would do it and try....

I bought a front M lip for 10 bucks off of CL and practiced trimming it to fit on a stock bumper....I was on the fence about actually installing it after i had it on so i just left it off.

If it woulda looked nice I either would have refinished it or baught a new one and trimmed it.
LuvMy328is
04-30-2008, 07:59 PM
^^Hey JB, isn't that the diffuser for the non-M bumper? I'm just asking because it sticks out a bit at the top like mine does.

I thought you had to cut a bit off of the actual M diffuser to make it fit on our bumpers.
Thats why I am going to experiment with trimming it.
~Phil