E90Post
 


VIBE Motorsports
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Koni FSD and Eibach Kit review - and ? and warning if you carry a lot of stuff/people



Reply
 
Thread Tools Search this Thread
      09-22-2007, 07:18 PM   #1
inthemiddle
Lieutenant
 
Drives: BMW
Join Date: Jul 2007
Location: Somewhere

Posts: 467
iTrader: (2)

Koni FSD and Eibach Kit review - and ? and warning if you carry a lot of stuff/people

Hey everyone...

So I put my Koni FSDs and Eibach Pro Kit springs on (despite them taking a week to get here when JLEVISW website said 1 day, which was believable since i live close.. but that's another story)

Review:
Small bumps with a relatively sharp impact - WAY smoother than stock ZSP.. the shock opens up nice and soaks it up great...

Damping over larger bums with no actual impact, very very stable... good damping... I love it... way better than the boat feeling of the stock ZSP over bumps in corners...

This holds true for 1-2 people in the car.... I had 4 in it last night... 2x140lbs in the back... a 174 and a 145 in the front... ...

With the 4 people in it and this shock/spring setup... BE CAREFUL... lips in the road, pot holes.. etc... hell it sounded like I hit a wall once going over a lip/bump onto a small bridge.... To me it seems like the sharp impact opens the shock, and there just isn't enough damping and it bottoms out too easy... that is a huge drawback if you often carry more than 1 other passenger.

I'll be ok with it as 99% of the time it's just me and one other in the car... so not too bad.. but still... it is annoying..

Are the stock springs stiffer ? would it make sense to maybe throw the stock springs on instead... how would you guys out there think it would affect the ride compared to what I describe ? I assume some of the harshness might come back a little, but would maybe be able to carry more weight ?
inthemiddle is offline  
0
Reply With Quote
      09-22-2007, 08:55 PM   #2
iOnBmer
Private First Class
 
iOnBmer's Avatar
 
Drives: stock tennis shoes
Join Date: Sep 2007
Location: USA

Posts: 116
iTrader: (0)

now i need to change my plan on getting this kit setup =/
iOnBmer is offline  
0
Reply With Quote
      09-22-2007, 10:38 PM   #3
Fraggy
Brigadier General
 
Fraggy's Avatar
 
Drives: 2007 e90
Join Date: Jun 2005
Location: San Diego

Posts: 3,310
iTrader: (11)

I would imagine most suspensions dont feel as good with 4 people in he car.
__________________
Step--Premium--Sport--Nav--20% Tint--Blacklines--18" Beyern Mesh--Michelin Super Sports--Bastuck Exhaust--M3 Steering Wheel--BMW Performance Springs--Koni--M3 Front/Rear Sways--
Fraggy is offline   United_States
0
Reply With Quote
      09-22-2007, 10:45 PM   #4
inthemiddle
Lieutenant
 
Drives: BMW
Join Date: Jul 2007
Location: Somewhere

Posts: 467
iTrader: (2)

Quote:
Originally Posted by Fraggy View Post
I would imagine most suspensions dont feel as good with 4 people in he car.
what is sorta funny is the car felt a lot more stable with the stock ZSP suspension with 4 people than it did with 2...

Then the fsd/eibach feels stable with 2, and rides heavy with 4... still sticks great, but just gotta seriously watch out for bad roads

i really love it when it's just me in the car though
inthemiddle is offline  
0
Reply With Quote
      09-22-2007, 10:52 PM   #5
Fraggy
Brigadier General
 
Fraggy's Avatar
 
Drives: 2007 e90
Join Date: Jun 2005
Location: San Diego

Posts: 3,310
iTrader: (11)

Yea, I had 4 people for the first time last weekend and it certainly was not as good.
__________________
Step--Premium--Sport--Nav--20% Tint--Blacklines--18" Beyern Mesh--Michelin Super Sports--Bastuck Exhaust--M3 Steering Wheel--BMW Performance Springs--Koni--M3 Front/Rear Sways--
Fraggy is offline   United_States
0
Reply With Quote
      09-22-2007, 11:12 PM   #6
iOnBmer
Private First Class
 
iOnBmer's Avatar
 
Drives: stock tennis shoes
Join Date: Sep 2007
Location: USA

Posts: 116
iTrader: (0)

any recommendation?
iOnBmer is offline  
0
Reply With Quote
      09-23-2007, 09:45 AM   #7
BMXtreme
Lieutenant Colonel
 
BMXtreme's Avatar
 
Drives: E60 535i
Join Date: May 2007
Location: Redmond, WA

Posts: 1,657
iTrader: (3)

Garage List
2006 330i  [0.00]
its probably you have a really agressive offset
my setup is fine even with 6 people squeezing inside....I am in NYC...never heard rubbing unless i am flying over a dip at 60mph.
BMXtreme is offline  
0
Reply With Quote
      09-24-2007, 12:09 AM   #8
inthemiddle
Lieutenant
 
Drives: BMW
Join Date: Jul 2007
Location: Somewhere

Posts: 467
iTrader: (2)

not rubbing at all... but shock or suspension or something bottoms out.... i had rubbing on my old wrx wagon, i know what that sounds like.. this was way different... like the sharp bumps, the shocks open up too much, and there isn't enough dampening to not bottom out
inthemiddle is offline  
0
Reply With Quote
      09-24-2007, 12:16 AM   #9
Rips335iCoupe
Banned
 
Drives: 2007 BMW 335i Coupe
Join Date: Aug 2007
Location: Goodyear, AZ

Posts: 947
iTrader: (1)

Garage List
2007 335i Coupe  [0.00]
Rips335iCoupe is offline  
0
Reply With Quote
      09-24-2007, 09:39 AM   #10
inthemiddle
Lieutenant
 
Drives: BMW
Join Date: Jul 2007
Location: Somewhere

Posts: 467
iTrader: (2)

hahah.. what do you want pictures of ?? I think i'd have a hell of a time:
- holding a camera out the window
- keeping it pointed at the wheel while hitting a sharp bump
- managing to take the picture at the exact moment the suspension bottoms out
- and not hurting me or my car in the process

BTW... my 335i Coupe is space grey with Grey Poplar as well... so you sorta know what it looks like already ;-)
inthemiddle is offline  
0
Reply With Quote
      09-26-2007, 02:09 PM   #11
Sal@AUTOcouture
 
Sal@AUTOcouture's Avatar
 
Drives: F80 M3
Join Date: Feb 2007
Location: NJ

Posts: 9,545
iTrader: (29)

Send a message via AIM to Sal@AUTOcouture
Quote:
Originally Posted by inthemiddle View Post
hahah.. what do you want pictures of ?? I think i'd have a hell of a time:
- holding a camera out the window
- keeping it pointed at the wheel while hitting a sharp bump
- managing to take the picture at the exact moment the suspension bottoms out
- and not hurting me or my car in the process

BTW... my 335i Coupe is space grey with Grey Poplar as well... so you sorta know what it looks like already ;-)
dude, he meant a picture of your car w/ the drop
Sal@AUTOcouture is offline  
0
Reply With Quote
      09-26-2007, 03:05 PM   #12
judec
born to be turbocharged
 
judec's Avatar
 
Drives: Not a bimmer yet
Join Date: May 2007
Location: Slovakia

Posts: 1,347
iTrader: (0)

Send a message via ICQ to judec Send a message via Skype™ to judec
the eibach springs are progressive. with a big load in the car the first soft 1/3 and possibly a part of the middle 1/3 of the spring got compressed pernamently and hitting a hole made the springs go to the 3rd "hard" 1/3, where they are really hard and hey dont recoil a lot. I can imagine that shock - well, that's a handicap of progressive springs.
__________________
Disclaimer: All this message was written with recycled electrons.

judec is offline   Slovakia
0
Reply With Quote
      09-30-2007, 09:27 AM   #13
Fraggy
Brigadier General
 
Fraggy's Avatar
 
Drives: 2007 e90
Join Date: Jun 2005
Location: San Diego

Posts: 3,310
iTrader: (11)

Are there any non progressive springs out there?
__________________
Step--Premium--Sport--Nav--20% Tint--Blacklines--18" Beyern Mesh--Michelin Super Sports--Bastuck Exhaust--M3 Steering Wheel--BMW Performance Springs--Koni--M3 Front/Rear Sways--
Fraggy is offline   United_States
0
Reply With Quote
      10-01-2007, 02:49 AM   #14
Chowbow
pew pew
 
Drives: 三三五i
Join Date: Aug 2007
Location: CA

Posts: 6,714
iTrader: (5)

Quote:
Originally Posted by Fraggy View Post
Are there any non progressive springs out there?
I've been looking. I couldn't find ANYTHING except for ZSP springs, or TCK COs.
__________________

CSL replicas are now CSL counterfeits. Jesus saves, like Valentine1.
Chowbow is offline  
0
Reply With Quote
      10-04-2007, 11:22 AM   #15
obLu
Major
 
obLu's Avatar
 
Drives: 330i 6MT ZSP
Join Date: Jun 2005
Location: Kirkland, WA, USA

Posts: 1,161
iTrader: (1)

I've had 4 people in the car ... a lot heavier than mentioned ... and didn't experience anything like that. I've also carried about 500lbs worth of servers in the trunk without issue.

In fact the ride got noticeably smoother over everything. I did get some suspension bottoming over speed bumps though.

For what it's worth, I pulled my 19" CH's off this weekend and I've been driving around with stock 162s. The suspension doesn't keep up with the heavier 162 nearly as well. But it's been so long since I was on 162/ZHP that I don't remember what that feels like.

Either way, the day I went from CH back to 162 the ride got awful. Not harsh, just not very controlled. Ripples make the car skip around where they didn't used to. Sharp impacts make the whole car shudder, again, where they didn't on the 19" CHs.
obLu is offline  
0
Reply With Quote
      10-10-2007, 10:40 PM   #16
namotorsports
 
Drives: 2007 BMW 328i Coupe
Join Date: Dec 2006
Location: Vernon, CT

Posts: 1,861
iTrader: (17)

Send a message via AIM to namotorsports Send a message via MSN to namotorsports Send a message via Yahoo to namotorsports
Are you sure you purchased the correct Eibach springs? Koni does not make a kit yet with Eibach springs and Koni FSDs, however, Eibach does make a 335 specific spring for the sedan and the coupe. What was the Eibach part number you purchased?
namotorsports is offline   United_States
0
Reply With Quote
      05-02-2008, 04:20 PM   #17
mwahlert
Lieutenant Colonel
 
mwahlert's Avatar
 
Drives: 2008 335i
Join Date: Apr 2008
Location: Durham, NC

Posts: 1,554
iTrader: (7)

Garage List
2007 335i  [0.00]
Quote:
Originally Posted by namotorsports View Post
Are you sure you purchased the correct Eibach springs? Koni does not make a kit yet with Eibach springs and Koni FSDs, however, Eibach does make a 335 specific spring for the sedan and the coupe. What was the Eibach part number you purchased?
is this still true today?

or is koni part number 2150 4036 correct fitment for 335 e90 sedan?
mwahlert is offline  
0
Reply With Quote
      05-03-2008, 02:47 PM   #18
Cool Car Dave
It goes fast.
 
Cool Car Dave's Avatar
 
Drives: Blue 07 335i Coupe
Join Date: Mar 2008
Location: Germany

Posts: 95
iTrader: (0)

I have the same setup. I dont have any problems with them but I didnt seem to get a drop with the Eibach Springs. Maybe a quarter inch or so.
Inthemiddle, what kind of drop did you see?
Cool Car Dave is offline   Germany
0
Reply With Quote
      05-03-2008, 03:34 PM   #19
tinka
Second Lieutenant
 
Drives: E90 2.0d M SPORT
Join Date: Dec 2007
Location: UK

Posts: 267
iTrader: (0)

out of interest,are the pro kit springs softer than the oem m-sport springs?.
tinka is offline   United Kingdom
0
Reply With Quote
      05-03-2008, 03:52 PM   #20
Chowbow
pew pew
 
Drives: 三三五i
Join Date: Aug 2007
Location: CA

Posts: 6,714
iTrader: (5)

I bought these exact springs off inthemiddle, and yes they are the correct part listed for e90 and e92. I have them paired with Bilstein HD shocks and have no issues with bottoming out with 5 people in my car.

It is definitely the shocks which are not up to par with dampening when used with these springs. I've always recommended using FSD shocks with stock springs only after talking with inthemiddle.

There is only a small amount of lowering with these springs, which is optimal for keeping the suspension geometry somewhat in spec.
__________________

CSL replicas are now CSL counterfeits. Jesus saves, like Valentine1.
Chowbow is offline  
0
Reply With Quote
      08-14-2008, 11:03 PM   #21
Vudoo4u2
Night Sh1ft
 
Vudoo4u2's Avatar
 
Drives: E90 M3
Join Date: Oct 2007
Location: It's bobsled time

Posts: 2,802
iTrader: (2)

Garage List
2011 BMW E90 M3  [5.00]
Send a message via AIM to Vudoo4u2
As far as I know, the 2150 kit is for the 328 and not the 335

Thats probably why you are having issues

They never made a "kit" for the 335i. The proper shocks for the 335i are the 2100 4036

You can then purchase the eibach pro-kit for the 335i coupe seperately

No kit, so I'm not sure why its listed for the e92 on the jlevi website like that, but when I purchased mine from tirerack, I received the 2100 4036, and the eibach springs seperately since their is no existing "kit" for the 335i.

That being said, I imagine that the 2150 kit has slightly different valving based on the weight difference b/w the 335i and the 328 (among other differences in the suspension)

The proper part number for a 335i coupe and sedan is the 2100

Cheers


**if you think I'm crazy, go check the koni website**
**in no way am I trying to put down jlevi, they are a good vendor on this forum and I have nothing bad to say about them**
__________________
Canon 14 F2.8 L II : Canon 50 F1.2 L : Canon 24-70 F2.8 L : Canon 70-200 F2.8 IS/L : Canon 5D Mark II : B+W Filters : Photo Whore
Vudoo4u2 is offline  
0
Reply With Quote
      08-20-2008, 11:59 PM   #22
Reno
Private First Class
 
Drives: e92 M3
Join Date: Aug 2008
Location: Bay Area, CA

Posts: 147
iTrader: (2)

If you do a search on the Koni website, you will see that the 2100 FDS set for the 335i is only compatible with the stock height suspension. So it is probably the shock bottoming out when used with lowering springs.
Reno is offline  
0
Reply With Quote
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 03:04 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST