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      02-04-2013, 10:40 AM   #1
Billyray911
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Koni FSD vs M sport-335d

Has anyone changed their existing M sport set-up to the Koni fsd kit?
If so,what's the verdict and did you change springs or use the existing M springs?
Cheers for any replies...
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      02-04-2013, 10:53 AM   #2
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Quote:
Originally Posted by Billyray911 View Post
Has anyone changed their existing M sport set-up to the Koni fsd kit?
If so,what's the verdict and did you change springs or use the existing M springs?
Cheers for any replies...
You may have already looked at the Tirerack review. I know it isn't a direct parallel, but probably one of the best test reviews with accurate data/comparisons for the FSD vs. M-sport suspension on a BMW.

http://www.tirerack.com/suspension/tests/koni_fsd.jsp

I used the FSD on a standard E91 SE suspension, no other change than the dampers, got what I was looking for, better handling, softer ride.

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      02-04-2013, 12:24 PM   #3
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They're quite expensive for just a shock option when reasonable quality coilovers are available for the same money.

( I understand the point and benefit of the FSD)

Last edited by 335DEE; 02-04-2013 at 12:30 PM.
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      02-04-2013, 02:06 PM   #4
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Pete
I've been reading your update with interest and thanks for the link.Unfortunately,i think that my hand has been forced and I've had to opt for replacement M sport suspension.
I would have liked to try the Koni kit combined with Eibach springs.
I was trying to research this quickly today,on the fly,while trying to (unsuccessfully) get BMW to sort my car under warranty.
Ideally,I want the benefit of of the sports set-up,without a 'crashy' ride.Something a little bit more compliant.However,I'm trying to gauge this against the fact that I now know that my shocks and one spring was facked...
Happy days!
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      02-04-2013, 02:07 PM   #5
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Timbo,or anyone else,if you have any suggestions on possible set-ups/kits,please post up
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      02-04-2013, 02:29 PM   #6
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Billy, dont panic!

My FSD's are still for sale, suit your car a treat.

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      02-04-2013, 02:36 PM   #7
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Originally Posted by YvesD
Billy, dont panic!

My FSD's are still for sale, suit your car a treat.

Yves
I shall pm you!
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      02-04-2013, 03:02 PM   #8
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Quote:
Originally Posted by Billyray911 View Post
Ideally,I want the benefit of of the sports set-up,without a 'crashy' ride.Something a little bit more compliant.
I fitted FSDs to my '06 Audi A3 Quattro and that's exactly how I would describe them. Really rather good.
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      02-04-2013, 04:18 PM   #9
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Quote:
Originally Posted by Billyray911 View Post
Timbo,or anyone else,if you have any suggestions on possible set-ups/kits,please post up
Bilstein B4 sports dampers with Eibach Pro-Kit springs.
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      02-04-2013, 05:43 PM   #10
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Quote:
Originally Posted by parapaul
Quote:
Originally Posted by Billyray911 View Post
Timbo,or anyone else,if you have any suggestions on possible set-ups/kits,please post up
Bilstein B4 sports dampers with Eibach Pro-Kit springs.
Any issues with the eibachs under heavy load-fouling the arches etc?
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      02-04-2013, 06:12 PM   #11
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Quote:
Originally Posted by o0timbo0o View Post
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They're quite expensive for just a shock option when reasonable quality coilovers are available for the same money.

( I understand the point and benefit of the FSD)
Koni's come out at around 500ish if you shop around,I wouldn't be putting a coilover kit of the same value on mm car!

Quote:
Originally Posted by YvesD View Post
Billy, dont panic!

My FSD's are still for sale, suit your car a treat.

Yves
Problem sorted

How many miles has the car done Billy?
How old?

How does the Tourer handle when going off road,and you thinking it's a 4x4

Depending on the above (age,mileage) I'd be pushing for some goodwill,is it all 4 shocks that are fubared?
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      02-04-2013, 08:09 PM   #12
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As you've given me a nice smiley,I'll tell you my tale of woe.I was going to post in the angry and rude thread,with a lot more expletives,but here we go...
It's a sore subject at the mo and I'd accept the hit if I didn't look after the car-I've not even struck any noticeable potholes,despite the roads being in shite order!
Basically,I drove to work with no issues and on the drive back,the car has suffered a cracked coil spring.
Apparently,damage to the spring could have happened over a prolonged period,with it being constantly hit with carriageway stones-causing weakness=crack.
This has also caused terminal damage to a winter tyre and brake flex.
No goodwill gesture as the BMW tech has said its a wear and tear issue-56 plate and 80k.
Mondial would have authorised the work,however,they have accepted this verdict and I'm on my own.
BMW have looked at the car and said that I also have three leaking shocks.The latter wasn't picked up during a health check a few weeks ago at the same main stealer.
Cost to repair £1700...
I've now had the car transferred to my (trusted) Indy.
They have has said that they will look at the shocks to see if they are actually leaking-if they are,ill replace them and that's why I've been trying to research alternative options to the M setup.
They have also quoted me to replace everything,using oem stock and its nearly a grand cheaper.
That's been my day(At least Mondial are allowing me two more days with their courtesy car).
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      02-04-2013, 09:20 PM   #13
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Originally Posted by Billyray911 View Post
Any issues with the eibachs under heavy load-fouling the arches etc?
Nope, none, and I use the car for fully laden trips to the tip fairly regularly. And I'm running 15mm spacers on the rear, too.

I don't remember exactly, but my Bilstein/Eibach setup came in at around 600, and it's light years better than the standard M Sport suspension. The garage will have to do no more work to replace the springs if they're doing the dampers anyway. If you're thinking about replacing the full setup, I'd seriously recommend this instead.

My thread here from when I lowered my E91.

HTH
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      02-05-2013, 03:52 AM   #14
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Thanks for the link...
I went to have a quick look at that link in E Bay and he only seems to stock the B4 damper-I believe that I would need a B4s for the Eibachs-correct?
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      02-05-2013, 04:00 AM   #15
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Quote:
Originally Posted by Billyray911
Has anyone changed their existing M sport set-up to the Koni fsd kit?
If so,what's the verdict and did you change springs or use the existing M springs?
Cheers for any replies...
+1 for bilstein b4s and eibach pro kit and shorter bump stops. No more crashing over potholes and manhole covers etc. Wouldn't be enough for track use but everyday driving this set up works well .
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      02-05-2013, 04:05 AM   #16
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I have the Bilstein B12 kit on my car, its Bilstein B8s dampers with Eibach Pro springs. It dropped my car by 40mm from the 4x4 look of SE! The car is completely transformed. It's firmer than Msport, but some how better over bumps and potholes. It now sits really nicely as well
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      02-05-2013, 04:27 AM   #17
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Nice one-cant seem to find B4S though-B4,but not the S...
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      02-05-2013, 04:41 AM   #18
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The b4s have to come direct from bilstein took around a week and abit.
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      02-05-2013, 05:45 AM   #19
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Quote:
Originally Posted by macck
The b4s have to come direct from bilstein took around a week and abit.
Cheers-ill have another look on their site-not the most user friendly!
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      02-05-2013, 06:30 AM   #20
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Quote:
Originally Posted by Billyray911
Quote:
Originally Posted by macck
The b4s have to come direct from bilstein took around a week and abit.
Cheers-ill have another look on their site-not the most user friendly!
Np if you go for them these are the part numbers for the bump-stops or secondary dampers . M3 front 31332225377 and z4 rear 33536770350.
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      02-05-2013, 10:35 AM   #21
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Still waiting for the verdict on what's ok and what's not.
However,I am leaning towards the Koni FSD and Eibach Pro set up.
I'll obviously be replacing the bumpstops too.Looking at a few threads,it seems that the Msport items are fine-it's only the US market that have reported problems with the length of these.
Any thoughts and anything else a "must",while I'm at it.
Basically,I want a more compliant yet focused ride than the existing Msport set-up...
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      02-05-2013, 11:14 AM   #22
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Your sig says you've already got an MSport car, so I can't see why you would need to change your bump stops...
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