E90Post
 


Extreme Powerhouse
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Koni yellows/eibach pro kit = bouncy ride



Reply
 
Thread Tools Search this Thread
      12-11-2019, 01:34 PM   #1
frenchie1013
First Lieutenant
frenchie1013's Avatar
65
Rep
361
Posts

Drives: sedan
Join Date: May 2014
Location: CT

iTrader: (0)

Koni yellows/eibach pro kit = bouncy ride

As the title suggests....I have this setup with an eibach front sway bar and adjustable end links and can't get the ride to be really any good. It's bouncy and super stiff no matter what I set the struts at.
Anyone have this setup with similar results. Really bummed as many people have recommended it.
__________________
2010 335i Rwd 6spd
MHD Wedge tune, VRSF Exhaust,FMIC, DP and CP, PR Inlets

2014 X5 50i
BMS stage 1, Dinan intake, F85 Knee Bolsters
Appreciate 0
      12-12-2019, 08:58 AM   #2
Volasko
Colonel
Volasko's Avatar
Canada
444
Rep
2,330
Posts

Drives: 2006 E90 330i BSM 6MT ZSP
Join Date: Dec 2010
Location: Toronto

iTrader: (2)

Garage List
Something seems off, I've had this kit (minus the eibach sway, I have M3 tho so not that different) for years and have nothing but good things to say about it. It handles the street better than the stock suspension and even is good enough for tracking duties. Sounds like you have either miss-matched parts or some sort of installation issue. Were the control arms typically removed to install these parts properly torqued down after you let the car sit under its own weight? I tend to run the adjustment setting to full soft (still stiff relative to stock), but it sounds like you've already tried that.

Last edited by Volasko; 12-16-2019 at 03:44 PM..
Appreciate 0
      12-12-2019, 03:29 PM   #3
Rickygst
Second Lieutenant
13
Rep
238
Posts

Drives: 335i
Join Date: Jun 2010
Location: Atlanta

iTrader: (5)

I have the koni with bmw sport springs. not bouncy. You may need to cut your bump stops.
Appreciate 0
      12-12-2019, 03:35 PM   #4
frenchie1013
First Lieutenant
frenchie1013's Avatar
65
Rep
361
Posts

Drives: sedan
Join Date: May 2014
Location: CT

iTrader: (0)

Ya I'm having a BMW tech look at my setup to make sure everything is good. I changed just about all the parts in the suspension based on all the suggestions in this forum. But if both of you are saying that the ride is compliant there def has to be something off.
Thanks !
__________________
2010 335i Rwd 6spd
MHD Wedge tune, VRSF Exhaust,FMIC, DP and CP, PR Inlets

2014 X5 50i
BMS stage 1, Dinan intake, F85 Knee Bolsters
Appreciate 0
      12-12-2019, 05:29 PM   #5
colorado.e9x
Entrepreneur
colorado.e9x's Avatar
United_States
276
Rep
931
Posts

Drives: 06 BMW 330xi
Join Date: Feb 2018
Location: Western Slope, Colorado

iTrader: (0)

Is it bouncy more in the rear than the front?
Appreciate 0
      12-12-2019, 05:34 PM   #6
frenchie1013
First Lieutenant
frenchie1013's Avatar
65
Rep
361
Posts

Drives: sedan
Join Date: May 2014
Location: CT

iTrader: (0)

Quote:
Originally Posted by colorado.e9x View Post
Is it bouncy more in the rear than the front?
Quote:
Originally Posted by colorado.e9x View Post
Is it bouncy more in the rear than the front?
Oh just the front. The rear is great
__________________
2010 335i Rwd 6spd
MHD Wedge tune, VRSF Exhaust,FMIC, DP and CP, PR Inlets

2014 X5 50i
BMS stage 1, Dinan intake, F85 Knee Bolsters
Appreciate 0
      12-12-2019, 06:38 PM   #7
weehe126
Colonel
636
Rep
2,335
Posts

Drives: 2016 340i
Join Date: Apr 2014
Location: San Antonio

iTrader: (2)

Just to confirm, you tightened the front control arms when at ride hight correct?
Appreciate 0
      12-12-2019, 06:39 PM   #8
frenchie1013
First Lieutenant
frenchie1013's Avatar
65
Rep
361
Posts

Drives: sedan
Join Date: May 2014
Location: CT

iTrader: (0)

Quote:
Originally Posted by weehe126 View Post
Just to confirm, you tightened the front control arms when at ride hight correct?
Yes
__________________
2010 335i Rwd 6spd
MHD Wedge tune, VRSF Exhaust,FMIC, DP and CP, PR Inlets

2014 X5 50i
BMS stage 1, Dinan intake, F85 Knee Bolsters
Appreciate 0
      01-03-2020, 09:26 PM   #9
cvc 22349a
Colonel
cvc 22349a's Avatar
United_States
142
Rep
2,530
Posts

Drives: 335i
Join Date: Sep 2007
Location: SF Bay

iTrader: (11)

How old are the strut top mounts? Did you reuse your oe bumpstops? With Eibach springs, you need shorter bumpstops.
__________________
2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD
Quaife lsd, ETS fmic, GIAC s/w, Dinan intake/exhaust/oc, Koni/M3 susp, Apex Arc 8, Mich PSS
Appreciate 0
      01-03-2020, 09:28 PM   #10
frenchie1013
First Lieutenant
frenchie1013's Avatar
65
Rep
361
Posts

Drives: sedan
Join Date: May 2014
Location: CT

iTrader: (0)

Quote:
Originally Posted by cvc 22349a View Post
How old are the strut top mounts? Did you reuse your oe bumpstops? With Eibach springs, you need shorter bumpstops.
I changed everything out roughly 10k miles ago
__________________
2010 335i Rwd 6spd
MHD Wedge tune, VRSF Exhaust,FMIC, DP and CP, PR Inlets

2014 X5 50i
BMS stage 1, Dinan intake, F85 Knee Bolsters
Appreciate 0
      01-04-2020, 10:52 PM   #11
Silnismo
Private
33
Rep
91
Posts

Drives: BMW 325i
Join Date: Aug 2018
Location: NJ

iTrader: (0)

I had the Koni oranges for about 8k before noticing some bounciness recently. Turned out they were both blown and I bought these brand new on stock springs smh.

Sending in my warranty form now.
Appreciate 0
      01-13-2020, 02:08 PM   #12
frenchie1013
First Lieutenant
frenchie1013's Avatar
65
Rep
361
Posts

Drives: sedan
Join Date: May 2014
Location: CT

iTrader: (0)

Quote:
Originally Posted by Silnismo View Post
I had the Koni oranges for about 8k before noticing some bounciness recently. Turned out they were both blown and I bought these brand new on stock springs smh.

Sending in my warranty form now.
Shit only 8k on them. Maybe I'll have to do the same
__________________
2010 335i Rwd 6spd
MHD Wedge tune, VRSF Exhaust,FMIC, DP and CP, PR Inlets

2014 X5 50i
BMS stage 1, Dinan intake, F85 Knee Bolsters
Appreciate 0
      01-15-2020, 12:20 PM   #13
WatchWolf34
Because Racecar
100
Rep
229
Posts

Drives: 2009 E90 335i 6MT
Join Date: Sep 2016
Location: Minnesota

iTrader: (1)

I have the same setup with an M3 sway bar and M3 control arms.

Mine was bouncing after my first install over rough roads and I was super bummed. My issue was just that I had the fronts set to full stiffness and the rears were softest. I realize it may seem silly but I matched the fronts and rears and the bounce went away.

Now I run it on the street and track and it's been great on both. Just thought I would offer my situation in the event that you've done the same and can do the simple adjustment.
__________________
Appreciate 0
      01-15-2020, 03:12 PM   #14
frenchie1013
First Lieutenant
frenchie1013's Avatar
65
Rep
361
Posts

Drives: sedan
Join Date: May 2014
Location: CT

iTrader: (0)

Quote:
Originally Posted by WatchWolf34 View Post
I have the same setup with an M3 sway bar and M3 control arms.

Mine was bouncing after my first install over rough roads and I was super bummed. My issue was just that I had the fronts set to full stiffness and the rears were softest. I realize it may seem silly but I matched the fronts and rears and the bounce went away.

Now I run it on the street and track and it's been great on both. Just thought I would offer my situation in the event that you've done the same and can do the simple adjustment.
Funny you mentioned this. I just actually changed my end links and seems to have helped a good amount. My next step tonight is to match front with the rear. My tears are set to 3/4 full stiff and my fronts are prob about half
__________________
2010 335i Rwd 6spd
MHD Wedge tune, VRSF Exhaust,FMIC, DP and CP, PR Inlets

2014 X5 50i
BMS stage 1, Dinan intake, F85 Knee Bolsters
Appreciate 0
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



All times are GMT -5. The time now is 11:22 PM.




e90post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
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