E90Post
 


 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Suspension | Brakes | Chassis > Im getting nervous



Reply
 
Thread Tools Search this Thread
      08-25-2011, 10:53 AM   #45
swifty
Major
23
Rep
1,295
Posts

 
Drives: FO M3
Join Date: Aug 2008
Location: canada

iTrader: (5)

fraggy, can you post a pic of how the car sits with the bmw perf springs on Konis?
Appreciate 0
      08-25-2011, 12:12 PM   #46
z28bryan
Private
0
Rep
68
Posts

 
Drives: 2011 328i sedan
Join Date: Aug 2011
Location: MA

iTrader: (0)

I'm not sure what the compression is on BMW Koni yellows, but on the LS1 Camaro it's actually lower than some shocks available, because it doesn't have to be that stiff. How does the compression on e90 Koni yellows compare to stock sport shocks or performance OEM shocks?

Since the rebound is adjustable, you don't have much to worry about here. As long as you adjust it correctly you can get it set to your preference.
Appreciate 0
      08-25-2011, 09:02 PM   #47
Fraggy
Brigadier General
Fraggy's Avatar
United_States
46
Rep
3,328
Posts

 
Drives: 2007 e90
Join Date: Jun 2005
Location: San Diego

iTrader: (11)

Quote:
Originally Posted by cvc 22349a View Post
Where'd you set the rebound dampening Fraggy?
I'm at 1.5F/1.25R and loving these Koni sports v. the FSD's
that's a very good question. I have no idea where the fronts are set. I got used ones and forgot to set them before going to the shop. I later called and asked the shop to set them to full soft and I'd take it from there. Well, I don't think they did as the front is beautifully firm, much too firm to be full soft. BUT, the strut bar bolts are SO tight I can't loosen them to adjust for myself and see where they are set lol. I've not yet had time to get to any shop just to loosen the bolt a bit.

The rears are 1 turn from soft but I can tell I'm going to go to 1.5 turns.
__________________
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--
Appreciate 0
      08-26-2011, 12:12 AM   #48
mike-y
just another bmw douche bag
United_States
36
Rep
3,398
Posts

 
Drives: 1.9L of fury
Join Date: Nov 2008
Location: Los Angeles, CA

iTrader: (4)

Might want to give it a couple of days before you re-adjust. Mine felt a bit softer after a few days.
Appreciate 0
      08-26-2011, 09:48 PM   #49
Fraggy
Brigadier General
Fraggy's Avatar
United_States
46
Rep
3,328
Posts

 
Drives: 2007 e90
Join Date: Jun 2005
Location: San Diego

iTrader: (11)

Quote:
Originally Posted by mike-y View Post
Might want to give it a couple of days before you re-adjust. Mine felt a bit softer after a few days.
They were installed on Tuesday and Ive put a couple of hundred miles on them at least and I can feel the difference.

Im holding off on any more adjustments until I can get the bolts off to adjust the fronts and see where they are set. I still have no idea where the previous owner had them set.
__________________
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--
Appreciate 0
      08-29-2011, 10:11 PM   #50
Fraggy
Brigadier General
Fraggy's Avatar
United_States
46
Rep
3,328
Posts

 
Drives: 2007 e90
Join Date: Jun 2005
Location: San Diego

iTrader: (11)

Quote:
Originally Posted by swifty View Post
fraggy, can you post a pic of how the car sits with the bmw perf springs on Konis?
I sure will, but I CAN tell you the car sits a bit higher. Id suspect its cause the Perf dampers were old and worn out and not supporting the car as well.
__________________
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--
Appreciate 0
      08-29-2011, 10:13 PM   #51
Fraggy
Brigadier General
Fraggy's Avatar
United_States
46
Rep
3,328
Posts

 
Drives: 2007 e90
Join Date: Jun 2005
Location: San Diego

iTrader: (11)

Quote:
Originally Posted by z28bryan View Post
I'm not sure what the compression is on BMW Koni yellows, but on the LS1 Camaro it's actually lower than some shocks available, because it doesn't have to be that stiff. How does the compression on e90 Koni yellows compare to stock sport shocks or performance OEM shocks?
It certainly feels that the compression damping is softer than the Perf Pack. Ridges in the road are absorbed very well and much smoother. In 95% of situations Id say they are significantly better than Perf Pack.
__________________
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--
Appreciate 0
      08-30-2011, 12:07 PM   #52
mike-y
just another bmw douche bag
United_States
36
Rep
3,398
Posts

 
Drives: 1.9L of fury
Join Date: Nov 2008
Location: Los Angeles, CA

iTrader: (4)

Quote:
Originally Posted by Fraggy View Post
I sure will, but I CAN tell you the car sits a bit higher. Id suspect its cause the Perf dampers were old and worn out and not supporting the car as well.

I noticed this as well. My car sits a bit higher than it did with the old zsp shocks. Kinda bummed me out at first, but it seems to have settled a bit after a month or so.
Appreciate 0
      08-30-2011, 03:42 PM   #53
Gimmethecash
Second Lieutenant
Gimmethecash's Avatar
2
Rep
215
Posts

 
Drives: Jet Black LCI e90
Join Date: Mar 2011
Location: So Cal

iTrader: (0)

Likely due to the springs being removed & re-installed slightly off from their original positions and needing to settle back in. Shocks have nothing to do with how high the car sits, only how fast it moves up & down, as all the weight is supported by the springs.
Appreciate 0
      08-30-2011, 09:58 PM   #54
Fraggy
Brigadier General
Fraggy's Avatar
United_States
46
Rep
3,328
Posts

 
Drives: 2007 e90
Join Date: Jun 2005
Location: San Diego

iTrader: (11)

Quote:
Originally Posted by Gimmethecash View Post
Likely due to the springs being removed & re-installed slightly off from their original positions and needing to settle back in. Shocks have nothing to do with how high the car sits, only how fast it moves up & down, as all the weight is supported by the springs.
I dont wanna start anything, but are you saying that even if no shocks were installed on car, just springs, that the car would sit as high?
__________________
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--
Appreciate 0
      08-30-2011, 10:58 PM   #55
HermanL
First Lieutenant
HermanL's Avatar
12
Rep
363
Posts

 
Drives: e92 6mt 335i
Join Date: Feb 2011
Location: Columbia MO

iTrader: (3)

Quote:
Originally Posted by Fraggy View Post
I dont wanna start anything, but are you saying that even if no shocks were installed on car, just springs, that the car would sit as high?
^yes, a damper will only have effect/force on your car when there is a velocity on vertical direction.
Appreciate 0
      08-31-2011, 04:05 PM   #56
z28bryan
Private
0
Rep
68
Posts

 
Drives: 2011 328i sedan
Join Date: Aug 2011
Location: MA

iTrader: (0)

Quote:
Originally Posted by Motion View Post
BMW OE stuff seem to have way too much compression damping and not enough rebound damping.
I think a lot of shocks seem to be like this in general. Koni seems to understand this stuff pretty well.
Appreciate 0
      09-01-2011, 12:00 AM   #57
Fraggy
Brigadier General
Fraggy's Avatar
United_States
46
Rep
3,328
Posts

 
Drives: 2007 e90
Join Date: Jun 2005
Location: San Diego

iTrader: (11)

It's actually quite fascinating. All other parts of the suspension are unchanged, yet the car rides smoother but yet more firm, body control is better, cornering significantly flatter. And if you don't pop for the expensive external adjustable rears as I did, it's pretty inexpensive. My car now rides smoother and corners better than it did with PSS9s.
__________________
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--
Appreciate 0
      09-01-2011, 12:11 AM   #58
cvc 22349a
Colonel
cvc 22349a's Avatar
United_States
27
Rep
2,266
Posts

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

iTrader: (8)

So, where'd you set 'em?
__________________
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
      09-01-2011, 01:43 AM   #59
luckyu
Lieutenant
luckyu's Avatar
5
Rep
423
Posts

 
Drives: 2007 328i, 1998 328i
Join Date: Jan 2007
Location: San Francisco Bay Area, California

iTrader: (1)

Quote:
Originally Posted by Fraggy View Post
It certainly feels that the compression damping is softer than the Perf Pack. Ridges in the road are absorbed very well and much smoother. In 95% of situations Id say they are significantly better than Perf Pack.
Cvc let me drive his car on Tuesday, and I felt the same way, that bumps were getting absorbed and made into tiny ripples. It felt distant, like the suspension was far away from me.
__________________
2007 328i ZSP. M3 suspension: custom valved Bilstein shocks, Hyperco race springs, M3 lower control arms front and rear, M3 sway bars, and M3 subframe bushings. E46 front guide supports. Euro tail lights.
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 09:04 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