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Discussion Starter · #1 ·
I just received my Eibach Springs and got some cool 18's not yet installed, i wanted to know you guys opinion on springs really a must with 18's on the Koup or is it just ok with the stock height?

Im kinda concerned about warranty issues ive been told from the dealership technician, they tend to blame warranty claims at the slightest prove of owner modification and even more if its a suspension mod which is clearly noticeable...:confused:
 

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They first need to provide proof that the lowering springs caused your warranty claim.
I'm waiting for my set from Northern Motorsports as I know they have the lowering springs that were meant for the Kia R package. They were specifically designed for the Koup so I'm not at all concerned to install them.

18's look best when the fender gap is reduced, so if I had a set of Eibach's on hand, they'd be on the car by now.
 

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drop it like it's hot :lol: sorry i just had to.if you want to lower the car get the ones from the sxr
 

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I'm lowering my Koup. So long as the rims don't rub, it's all good. If they do, roll those fenders! Also, get the camber adjusted. 18's without lowering will kind of look like a 4x4 in my opinion.
 

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Discussion Starter · #5 ·
i got eibach 4617.140 which lowers 1.2F/1R, bought them at KFXperformance, they didnt have the ones for the SXr which i think are 1.3F

Im dying to install them, but considering my stock suspension its already kinda noisy and could get worst or break something being unable to claim warranty for it its scary, thats my biggest concern. In that case, can i go back to stock and take it to the dealership? will they notice?
 

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everyone will say yay or ney but IMO just putting the springs on is not a good idea. unless your just going for looks and your showing this car and NOT using it as a daily commuter, then do it cuz if your driving a lot, the drive is going to suck. i decided not to lower mine because i rode in a friends civic that got lowered and holy crap i felt like i was getting hit in the head on even the slightest of bumps. if you are going to lower it, i would look at the suspension upgrade link ****** posted.

"Hey everyone,

Just had the Eibach springs (part #4617.140) installed on my Bright Silver Koup SX, along with Ultra Racing ( Forte/Koupe 2009 | Ultra Racing Canada ) front upper tower strut bar, both the front lower 2-point and 4-point bars, the rear lower bar and the rear anti-sway bar. Also mounted the ASA AR-1s 18x7.5 w 215/40-18s BF-Goodrich Comp-TA KDW. (Would love to include pics but somehow my laptop has decided to refuse 'communicating' with my digital camera. Pics will follw as soon as I solve this minor (?) gitch. As an aside, I just don't understand how Bill Gates got so obscenely rich selling such crap... but I digress...NB LAPTOP PROBLEM SOLVED, PICS UPLOADED). Also installed the Shark Racing lip spoiler and the Visual Garage shark-fin antenna.

The Eibach kit drops the car 1.2" front and 1.0" rear; I would have prefered the H&R's 1.5" front/1.2" rear but I just couldn't wait till the middle of June for the H&R springs to become available up here in Canada. The very small visual difference between Eibach's and H&R's would only be noticable if two cars equiped with one of each would be sitting next to each other.

Visually, the result is absolutely stunning! I've had the car for almost two months now and had been getting a lot of compliments on how the car looks but now it is downright embarassing... heads snap wherever I go, young kids in dressed-up Civic SI's chase me down to get a better look at the car and whenever I park just in front of the door of whatever boutique/shop/business I need to go to, guys young and not so young come out to check out the car. A common comment here in Montréal is "yé beau en crisse!!" (I'll let the Yanks figure out what that means...:)) I also have an '07 BMW 335i coupe with Beyern Mesh 19" wheels which I happen to think looks very nice and that car has never, never gotten this much attention.

Now for the important part: namely how it drives.

The stock 'sport suspension' set-up is fine for 5/10ths cornering; mild understeer and 'reasonably' responsive steering. The absence of rear anti-sway bar is mildly noticeable on quick left-right transitions; you notice the rear tires hooking up just a heartbeat after the front which requires a small steering correction to maintain the line. When you push harder, the front/rear disconnect gets much more pronounced, to the point that it almost feels like the rear is going to transition to oversteer but it never gets there because the fronts have nearly given up and you need a large increase in steering input to counteract the severe understeer once the chassis settles down.

Now, the car is very tight.

I tested the suspension upgrades one at a time, starting with the frame braces, then the springs, then the rear sway-bar and finally the 18' wheels'n tires.

The frame braces speed-up steering response noticeably and actually makes the car feel better built thru bumps (less chassis flex=less noise transmitted inside when hitting bumps).

The springs firm things up very nicely without being harsh, greatly reduce squat/dive and substantially reduce the front/rear disconnect. I suspect that the springs without the frame bracing would result in an increase in impact harshness though I don't think it would be objectionable if your primary goal is improved handling. If you just want the car to look cool :cool: cruising the Taco Bell lot, then, yeah, you'll probably think it's a little hard...:p

The rear anti-sway bar completely takes care of the front/rear disconnect and allow the front tires to get much more traction during cornering, specially under acceleration.

Finally, the 215/40 18inchers raise traction to a whole new level. The car hangs on so much better before understeer reappears but then, you're at 8.5/10 with an ear-to-ear grin on your face...:D

4-wheel alignement was required; they installed camber bolts up front to bring it back within specs and I had them adjust the toe-in to the maximum positive value within the OEM specified range for that little bit of extra quickness to bite on initial turn-in :) NB: Don't consider not getting the car's alignment checked after any suspension work; it'll eat up your front tires in no time...:mad:

The feeling is, it's a completely different car!

Remembering that the stock 'sport' suspension front anti-sway bar was designed and calibrated without a rear anti-sway bar, the addition of an aftermarket rear bar does shift the chassis's total roll stiffness towards the rear somewhat; I'm hoping someone will soon develop and bring to market a stiffer front bar wich will make the car as neutral and balanced as a front-driver can be. Before the 335i, I drove a full kit '03 John Cooper Works Mini S; on dry, public roads, it was nearly impossible to make the car understeer and it was actually easy to set up oversteer when cornering which is quite rare for FWD cars.

Like I said, pictures as soon as I can.

******

Eibach Springs $395 tx incl.

Ultra Racing frame braces and anti-sway bar $917 shipping+tx incl

Installation : 3 hours frame braces, 3 hours spring swap, 1 hour painting brake calipers high gloss black $590 tx incl

ASA AR-1 18x7.5 w BF-Goodrich Comp-TA KDW 215/40-18 $1,870 shipping, tx+import duties incl at Tirerack.com

Alignement 2.9 hrs at the Kia dealership $380 (I know, it sounds like I got gouged but the car was on the machine 3 times + camber bolts were $41 each, 2 req'd)

Total cost $4,152 CDN

IF you value good handling and you drove this car, you'd definitely say it was worth it... "
 

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there are alot of things that come into play with suspension.. a lower car doesnt have to ride like shit.. that all depends on what kinda springs they are (progressive wound or static wound) as well as the spring rates and your shocks and their dampening.

I've had my ion lowered for 50+k and yes the struts / shocks blew out at 75k but the car road fine the whole time.. now with new shocks/struts the car rides phenomenal corners great and looks better.. a lowering the car shouldnt be looked at as a visual mod.. it's lowering the center of gravity and pivot point of the car thus making turning better and the car stiffer (less body roll)

yes this usually comes with a slightly stiffer ride but not always hell my ion rides better now then it did stock
 

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I have driven ******'s Koup and I absolutely loved it! Those Ultra racing suspension components are incredible. It was ...literally... like driving a gokart. The ride quality was excellent.
 

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Discussion Starter · #9 ·
I drove a Koup Ex and its noticeably softer suspension compare to the Sx. Maybe youll agree or is it me, The Koup Sx Suspension is sometimes harsh and stiff; so if we already have a "stiffer" sport suspension that feels like having lowering springs but with an ugly wheel gap, why not lower it and still be stiff but sexy lol.
Lowering springs dont always means harsh, i recall i loved even more my Wrx after springs install, it was less noisy on bumps and road cracks..

Thanks for your opinions on ******'s ride Koup SXR... im going for the same setup..
 

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I have driven ******'s Koup and I absolutely loved it! Those Ultra racing suspension components are incredible. It was ...literally... like driving a gokart. The ride quality was excellent.
I didn't drive ******'s car, but he did take me for a ride. Go-kart was exactly the expression I used for the experience. I wanted the ride in his car to see what the ride was like because I want to lower my Koup for cosmetic reasons only and I find the ride of the SX already stiffer than I would prefer. I was happy to find that the ride was not significantly harder than my stock SX. I had him purposly aim for bumps/manholes to check it out. The only possibly negative point I experienced was at one place there was a dip in the road and I thought I felt the car bottom out against the bump stops where the stock car probably wouldn't have.
 

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Discussion Starter · #11 ·
I didn't drive ******'s car, but he did take me for a ride. Go-kart was exactly the expression I used for the experience. I wanted the ride in his car to see what the ride was like because I want to lower my Koup for cosmetic reasons only and I find the ride of the SX already stiffer than I would prefer. I was happy to find that the ride was not significantly harder than my stock SX. I had him purposly aim for bumps/manholes to check it out. The only possibly negative point I experienced was at one place there was a dip in the road and I thought I felt the car bottom out against the bump stops where the stock car probably wouldn't have.
Im in the same boat, looking for aesthetics but i was worred about the lowered/stiffer ride to degrade my driving experience but now i feel relieved. Ill take the plunge and get those springs on the car.. Thanks Ileader for your opinion :rolleyes:
 

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Hey alberto1dh!

The total increase in impact harshness will depend not only on the springs but also on whether you stick to the OEM all-season tires on 17" rims or go to high performance summer tires on 18" (which, you've indicated above, is your plan. BTW, did you get the XXR 521s?)

If you were to install only the 18" rims/tires, you'd notice slightly more impact harshness than installing only the Eibach's with the OEM wheels/tires. In other words, the Eibach springs add less 'harsness' than 18" high-perf rubber.

I installed both and yes, overall there is a small but still noticeable increase in impact harshness. In my opinion, it's a small price to pay for the very siginificant improvement in handling/feedback/traction.

Both SXR and lleader have experienced my car with the mods from their own perspective on the subject (SXR: handling more important, lleader: cosmetics/comfort more important) and both found exactly what they were looking for so I'm tempted to conclude that the end result of my setup is just right in the sliding scale of comfort-versus-handling compromise.

To Aidensgrand who mentions his friend's Civic, I'll say that the springs used can have a HUGE influence in impact harshness; Eibach and H&R are not the only ones out there and it's possible to drop 1.5" or more but with springs for track use which are 'holy crap!' much more stiff than stock and yes, the street ride on those would be punishing... Plus, it may have been on 19" or maybe even 20" rims/tires...??? And we haven't talked about shocks with can add a whole lot more impact harshness (using way more compression damping) all of which would be the setup for track use but 'unliveable' in the street.

Ya gotta drop her!!:cool:

You'll share pictures, right!

Cheers,

******
 
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