E90Post
 


Bimmer Retrofit
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Koni FSD v. Sport



Reply
 
Thread Tools Search this Thread
      01-05-2015, 12:20 PM   #1
KKelly
Enlisted Member
KKelly's Avatar
0
Rep
41
Posts

Drives: 2007 335i Sedan (manual)
Join Date: Jan 2009
Location: San Carlos, CA

iTrader: (0)

Garage List
1995 M3  [0.00]
Koni FSD v. Sport

I just installed Koni FSD on my 2007 335i sport and while the ride is great, I am less than thrilled with the damping--needs 10-15% more compression/rebound--especially in the rear. My impression is that it is not the equal, performance-wise, to my stock shocks when they were new. Seems they may be more suited to a non-sport suspension.

Has anyone installed the Koni yellows on a stock sport suspension? If so, impressions? I had Bilstein sports with Dinan springs on my M5 for years and switched to Konis and the ride improvement was significant with very little difference in performance.

Any other oem replacement experience (Bilstein touring class, etc.)?

At this point considering a swap to the Koni Sports.
__________________
Kevin
'07 335i Sedan, man, sport, Silver/Black
'95 M3 track car, Avus/Dove, AST 4200's, etc.
Prior BMW's: '91 M5 Alpine White/Black
'89 325i
Appreciate 0
      01-05-2015, 12:26 PM   #2
Jeff@TopGearSolutions
BimmerPost Supporting Vendor
Jeff@TopGearSolutions's Avatar
United_States
266
Rep
18,830
Posts


Drives: C6 Z06, GSXR-750, 09 335i
Join Date: Dec 2008
Location: TopGearSolutions.com

iTrader: (32)

Send a message via AIM to Jeff@TopGearSolutions
I tell most guys to go with Koni Yellow Sports for this reason. Without the ability to adjust the FSD you are left with whatever it gives you. Although the FSD cater to stock suspension vehicles it sometimes leaves something to desire depending on your needs/wants out of the suspension.
Appreciate 0
      01-06-2015, 03:02 AM   #3
cvc 22349a
Colonel
cvc 22349a's Avatar
United_States
34
Rep
2,325
Posts

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

iTrader: (9)

Yes Koni sport with oem sport springs was my favorite spring/shock combo. I had a few. I did not like fsd's; they're underdamped and inconsistent in their damping.
__________________
2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD
Quaife lsd, ETS fmic, GIAC s/w, Dinan intake/exhaust/oc, KW/M3 susp, Apex Arc 8, Mich PSS
Appreciate 0
      01-06-2015, 03:02 PM   #4
KKelly
Enlisted Member
KKelly's Avatar
0
Rep
41
Posts

Drives: 2007 335i Sedan (manual)
Join Date: Jan 2009
Location: San Carlos, CA

iTrader: (0)

Garage List
1995 M3  [0.00]
Quote:
Originally Posted by cvc 22349a View Post
Yes Koni sport with oem sport springs was my favorite spring/shock combo. I had a few. I did not like fsd's; they're underdamped and inconsistent in their damping.
Thanks. I have to do some wrenching on the M3 to get it ready for a track day. After that, I will swap out the FSD's. Now that I have done it once the second time around should be much quicker. BTW, taking out the trunk liner took as much time as changing the rear shocks themselves. I almost considered cutting a hole in the liner like I have in the M3. :-)

BTW, settings on the Koni's that worked?
__________________
Kevin
'07 335i Sedan, man, sport, Silver/Black
'95 M3 track car, Avus/Dove, AST 4200's, etc.
Prior BMW's: '91 M5 Alpine White/Black
'89 325i
Appreciate 0
      01-06-2015, 03:12 PM   #5
cvc 22349a
Colonel
cvc 22349a's Avatar
United_States
34
Rep
2,325
Posts

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

iTrader: (9)

With oem sport springs I liked 2/3 turn from soft and 1-1/4 turn from soft up front.
__________________
2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD
Quaife lsd, ETS fmic, GIAC s/w, Dinan intake/exhaust/oc, KW/M3 susp, Apex Arc 8, Mich PSS
Appreciate 0
      01-06-2015, 03:45 PM   #6
KKelly
Enlisted Member
KKelly's Avatar
0
Rep
41
Posts

Drives: 2007 335i Sedan (manual)
Join Date: Jan 2009
Location: San Carlos, CA

iTrader: (0)

Garage List
1995 M3  [0.00]
Quote:
Originally Posted by cvc 22349a View Post
With oem sport springs I liked 2/3 turn from soft and 1-1/4 turn from soft up front.
Thank you sir. By the way, while it wouldn't be easy, I can't see why you couldn't just take off the lower shock nut, compress and turn while in the car to adjust the shocks (a minion holding the shaft with an allen wrench up top).
__________________
Kevin
'07 335i Sedan, man, sport, Silver/Black
'95 M3 track car, Avus/Dove, AST 4200's, etc.
Prior BMW's: '91 M5 Alpine White/Black
'89 325i
Appreciate 0
      01-06-2015, 04:42 PM   #7
ajsalida
Lieutenant Colonel
ajsalida's Avatar
20
Rep
1,774
Posts

Drives: 95 M3, 02 R1150GSA, 09 335xi
Join Date: Aug 2010
Location: SW USA

iTrader: (2)

Quote:
Originally Posted by KKelly View Post
Thank you sir. By the way, while it wouldn't be easy, I can't see why you couldn't just take off the lower shock nut, compress and turn while in the car to adjust the shocks (a minion holding the shaft with an allen wrench up top).
You're sort of right. You can't compress it enough with the bump stop still on. So the way to do it is to take the top mount off, drop the shock out leaving it attached to the lower mount, remove the remaining top mount hardware and bump stop + dust cover, and then compress the rod into the shock body. It saves a little time. The carpet you'll get good at removing quickly.

I also have an E36M3 with Koni sports as well, this is how I adjust rears on both cars. I did cut the carpet on the M3 but regretted it, so not on the 335xi.
Appreciate 0
      01-06-2015, 05:15 PM   #8
cvc 22349a
Colonel
cvc 22349a's Avatar
United_States
34
Rep
2,325
Posts

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

iTrader: (9)

Quote:
Originally Posted by KKelly
Quote:
Originally Posted by cvc 22349a View Post
With oem sport springs I liked 2/3 turn from soft and 1-1/4 turn from soft up front.
Thank you sir. By the way, while it wouldn't be easy, I can't see why you couldn't just take off the lower shock nut, compress and turn while in the car to adjust the shocks (a minion holding the shaft with an allen wrench up top).
I think you gotta take the rears off the car to compress fully. You probably won't do that more than once. And I was talking about the rear shocks when I suggested 2/3 turn from soft.
__________________
2007 E90 335i, TiAg, 6AT, ZPP, ZSP, ZCW, 6FL, HD
Quaife lsd, ETS fmic, GIAC s/w, Dinan intake/exhaust/oc, KW/M3 susp, Apex Arc 8, Mich PSS
Appreciate 0
      01-07-2015, 01:36 PM   #9
KKelly
Enlisted Member
KKelly's Avatar
0
Rep
41
Posts

Drives: 2007 335i Sedan (manual)
Join Date: Jan 2009
Location: San Carlos, CA

iTrader: (0)

Garage List
1995 M3  [0.00]
Understood. I would assume I won't adjust them much either. I have the carpet cut on my track car to access the top of the AST's.
__________________
Kevin
'07 335i Sedan, man, sport, Silver/Black
'95 M3 track car, Avus/Dove, AST 4200's, etc.
Prior BMW's: '91 M5 Alpine White/Black
'89 325i
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
Forum Jump


All times are GMT -5. The time now is 07:18 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, 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