ok, i have read thru the posts, and there is great technical info on them, but thats just the problem, can anyone translate the differences between the two besides the $100 price difference into plain english? Harsher ride? better cornering? greater amount of adjustability? i plan on using the EDFC with which ever one i buy. can the EDFC adjust ride height as well? my brother has the Tein RA's on his car, and it handles like a mo'fo, and the overall ride is not too harsh, too bad they don't make that for our car. somebody hook up some useful info for me. i'd like to read some opinions on the two systems from anyone who has them on their coupe. thanks in advance!

04 DG/G/6MT/Premium/Nav/Clear Bra
Bone Stock...to be continued...
"You kill mah brodah, now I kill you!" - some old kung-fu flick

 

Flex = very stiff, harsher ride, better handling
CS = comfort spec, nice ride, not as good as Flex for handling

Flex has seperate height and preload (suspension travel) adjustment. CS has only height adjustment.
EX: I have nearly the stock amount of travel on my Flex, CS you cannot adjust travel length without adjusting the height.

Both are 16 way rebound/damping adjustable.
I don't think the CS is EDFC compatible.



Chris Ressler
PasSport Infiniti - Quality Control Manager
Capital G club - President
** Your friend on the inside **

 

You need to be serious about handling to appreciate the Flex.

Chris Ressler
Capital G club - President
Freshalloy Club - E. Coast Event Coordinator
PasSport Infiniti - Quality Control Manager
** Your friend on the inside **

 

thank you prodrift, and i am indeed very serious about handling. thats y i want to be able to hook up the edfc, since i drive in different environments everyday. i want to be able to change the ride stiffness on the fly because one part of the day i'm in the bumpy roads of the city, then another part of the day i'm on the twisties of the suburbs. so i need to be able to soften the suspension up when i hit up the city because i'm gonna be rolling on 19" rims and i need to decrease the chances of bending them, but i also wanna attack the twisties in the 'burbs when i go cruising with my crew which consists of track prepped gt-r, a track prepped rx-7, an STi, and a couple of S2000's, which all handle like they are on rails. on occassion i may go to a road track. although i most likely will not use all 16 points of adjustment, i do want something that can handle when i need it to and be slightly civilized for an everyday commute (i'm sick of bone-jarring commutes). on another note, i believe the CS is EDFC compatible. basically i'm looking for something aggressive for the track and civilized everyday driving, do you think that the flex is up to the task, provided i use the EDFC to change between hard and soft? thanks again for your input, it is greatly appreciated.

04 DG/G/6MT/Premium/Nav/Clear Bra
Bone Stock...to be continued...
"You kill mah brodah, now I kill you!" - some old kung-fu flick

 

I installed the Tein CS over the weekend and the ride so much better than stock I highly recommend them if your looking for comfort , I felt the Flex's would be a bit stiff for my taste and the EDFC is compatable with the CS's

 

nismoGcoupe,
I'm seriously considering the Tein CS. Tell me more! How is the ride better than stock? Is it smoother? What size wheels/tires are you running?
Comfort is my #1 concern with lowering my G. I've had too many lowered cars that rode like skateboards.. but I just changed the springs/shocks with those. This will be my first set of coil-overs. I'm just concerned that I'll spend tons of money, and it'll still ride like a skateboard. I'm planning on getting some 19" Volks to go along with the Tein CS.

Prodrift, your review was helpful too. I tried to do a search on this subject, but couldn't find a good answer.

 

I have 20's on with about 1.5" drop, what I meant by the ride is better than stock is that the bounce is gone it rides very smooth(it feels planted to the ground) and its not a harsh ride at all, I cant really give you detail on the handling part of them yet because I havent tested it yet, right now my dampering is not set properly the rear are set a little to soft, so once I get my EDFC installed I can give you a full deatiled review,

 

Awesome.. thanks nismoGcoupe!! You just sold me on them.

 

i just found this great article written by a forum member who is very credible. i may be sold on the tein flex's based on his experience with them...
http://www.g-owners.com/article_read.asp?id=40

04 DG/G/6MT/Premium/Nav/Clear Bra
Bone Stock...to be continued...
"You kill mah brodah, now I kill you!" - some old kung-fu flick

 

I had a long detailed discussion with Tein about the CS coilovers. The jest of which was, vs the Flex the CS is on the other side of the spectrum. The CS is for those that want a smooth comfortable ride with a bit more spring stiffness and their valving is set to give that result. I'm sure set on stiffer dampner settings they will outperform the oem setup to a degree. But to those that want performance, that degree will not be anywere near enough. That is where the Flex system come's in. But, with the Flex using spring rates that are a LOT stiffer and being valved for performance, they should only be considered by those that want a performance setup, ride quality as secondary. You can turn down the dampners, but their's no escaping spring rates that are 114% stiffer than stock, in contrast the CS system rates are only 25% stiffer than stock.

Something else that's missed, the CS coilovers a monotube design, Flex coilovers are twin tube design. The mono tube will offer more percise valving control, which you will feel as a sensation that the car is being controlled more effectively, like someone spend more time in R&D. Monotube's are more expensive to produce and with stiffer springs and tigher valving settings, tend to ride more harshly, but their better valving control remains and have the added benefit of disapating heat better with larger piston diameters and larger oil capacities.

For a comfort system, the CS is a excellent choice.


"All that's necessary for the forces of evil to win in the world is for enough good men to do nothing.”
Edmund Burke

G35 6mt

 

nice! great input!

04 DG/G/6MT/Premium/Nav/Clear Bra
Bone Stock...to be continued...
"You kill mah brodah, now I kill you!" - some old kung-fu flick

 

i'm interested in the flex, only issue is my gf and I share the car, sounds like even with them on their softest setting there is still quite a bit more stiffness than stock. think she'll notice?

Mize
Silver 03 6 Speed Sedan/Willow/Premium
Wish List:
18x8 SSR GT1 with 245/40/18 Kumho Ecsta MX
Springs/Shocks/Sway Bars
http://www.AutomobileFanatic.com

 

I am torn between the two right now. I have been looking into the EDFC compatible Tein systems for the coupe for awhile now. My question is this: Which one is more usable on both tracks and daily driving?

From what I have heard, the FLEX system offers 16 levels of adjustment. However the bottom 8 settings are so firm they are almost unbearable even on a smooth race track. At the softest setting the Flex is still firmer than stock suspension.

The CS on the other hand, seems to offer smoother and more cushy ride than the stock. My biggest question is whether or not the CS w/ EDFC can provide satisfactory track performance when setting the damper to a firmer level. The ideal scenario for me would be a system that can provide:

a) G35 sedan-like ride with damer setting on soft.
b) Stock G35C ride in the middle setting.
c) Stiff enough to improve handling and reduce roll on track.
d) Modifying front/back damper value to change handling characteristics of the car. (Namingly increase rear stiffness to lessen understeer)

Obviously I am not relying on the Tein as the do-it-all track solution. A set of Nismo stabilizer bar will accompany the Suspension installtion.

On paper, the EDFC + Tein CS seem to be able to provide what I am looking for. However there is no confirmation on these assumptions and I don't want to shell out $2500 to find out.

Any user reviews of the CS on track?

 

CS won't improve handling much. The spring rate is very soft compare to the flex. What you can do is get softer springs than what comes on the tein flex.

04 G35C 6mt/aero kit/nav/premium

 

I had the first set of Tein CS in the U.S. put on when I first got my 04 coupe in September of last yr. The ride is relatively smooth and not harsh at all even when teh setting is at the stiffest. On the flip side, I've sat in 350Zs and G35s w/ the flex and one thing that I found annoying was the pillowball mount causing a slight mechanical clunking sound, which is a natural noise because it doesn't use the stock rubber mounts for cushion.



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