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      07-14-2018, 07:34 PM   #1
Blacross
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Rear diffusers, which ones to get and stay away from

So there seems to be a large range in price for carbon fiber diffusers for the f10 m5 but they all look very similar in design short of maybe differing in 1 2 or 3 slats.

Can people share their experiences on brands they've tried that have great fitment or poor fitment so we can make some educated decisions on purchase other than just going for the cheapest or most expensive and hoping for the best?
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      07-15-2018, 12:31 AM   #2
Phatcat
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Quote:
Originally Posted by Blacross View Post
So there seems to be a large range in price for carbon fiber diffusers for the f10 m5 but they all look very similar in design short of maybe differing in 1 2 or 3 slats.

Can people share their experiences on brands they've tried that have great fitment or poor fitment so we can make some educated decisions on purchase other than just going for the cheapest or most expensive and hoping for the best?
I have the M performance version. It fitted great.
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      07-15-2018, 12:52 AM   #3
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All I can tell you is to stay away from eBay ones. You may have 1% of getting one that will fit correctly
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      07-15-2018, 09:51 AM   #4
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M-Performance fitment is perfect. Will be parting my car in the next month or so and will be selling mine in classifieds.
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      07-15-2018, 10:40 PM   #5
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A recent thread I started. Might help a bit.

https://f10.m5post.com/forums/showthread.php?t=1511910
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      07-16-2018, 12:04 PM   #6
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I have a brand new Agency Power CF diffuser that i never installed (selling m5) if you want to buy shoot me pm on here. Top brands like ones listed below are perfect fitment;

Vorsteiner
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M - Performance
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      07-16-2018, 01:31 PM   #7
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Vorsteiner
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      07-16-2018, 02:10 PM   #8
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My Kohlenstoff fits pretty well considering it runs all the way down
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      07-17-2018, 11:16 AM   #9
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Quote:
Originally Posted by Rickzg View Post
My Kohlenstoff fits pretty well considering it runs all the way down
You have any more pics you could share? Especially underneath. I've always been curious about it and their website doesn't really show anything. Thanks in advance.
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      07-17-2018, 12:03 PM   #10
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Hi bud these are the best I've got at the moment when I trial fitted it simply by bolting it straight on. To get it perfect I had to take the bumper off but no grinding or cutting was required!
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      07-17-2018, 03:43 PM   #11
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What a beast of a piece! Thanks for posting those additional photos.
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      07-17-2018, 03:50 PM   #12
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What a beast of a piece! Thanks for posting those additional photos.
It won’t be to everyone’s taste but when you view the car from behind it looks amazing!
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      07-18-2018, 07:44 AM   #13
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Appreciate you posting this... there are so many options.

Whats everyone's thoughts on the smaller M Performance style (i.e, only replaces the section between the exhausts) vs the full replacement (extends past the exhaust pipes) like the Vorsteiner? I'm trying to decide whether the latter is just too much for an AW car.
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      07-18-2018, 08:12 PM   #14
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Is it just me or is the vorsteiner slightly different in design that the others like it? Like does it flare a bit more at the top?
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      07-19-2018, 11:33 PM   #15
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Quote:
Originally Posted by xsilvor View Post
Appreciate you posting this... there are so many options.

Whats everyone's thoughts on the smaller M Performance style (i.e, only replaces the section between the exhausts) vs the full replacement (extends past the exhaust pipes) like the Vorsteiner? I'm trying to decide whether the latter is just too much for an AW car.
Personally, i feel like AW is the only color that needs the center section ones. The others seem to look good either way. Just my opinion as an AW owner.
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      07-31-2018, 03:58 PM   #16
Chauncey.Bishop
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Quote:
Originally Posted by xsilvor View Post
Appreciate you posting this... there are so many options.

Whats everyone's thoughts on the smaller M Performance style (i.e, only replaces the section between the exhausts) vs the full replacement (extends past the exhaust pipes) like the Vorsteiner? I'm trying to decide whether the latter is just too much for an AW car.
Quote:
Originally Posted by bquicksilver View Post
Personally, i feel like AW is the only color that needs the center section ones. The others seem to look good either way. Just my opinion as an AW owner.
I agree with bquicksilver to go with the smaller style on AW. Keep it classy and don't go full panda (white car with too many black accents).
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