GT Performance Mods 2005+ Mustang GT Performance and Technical Information

Suspension/ride quality problems

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Old Sep 15, 2007 | 07:21 PM
  #41  
ttbit's Avatar
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Joined: February 18, 2006
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Originally Posted by GTRacerX
Going back to it after having my Steeda Sport Springs & Tokico D-Specs -
Wow. I guess I am glad I went to the Ultralites. I understand what you mean if it was that rough though. Mine is rougher that stock on the bigger humps, but not necessarily bumps/cracks where I think it absorbs better than stock.

Hope you like your new combo. I had Bilsteins on my '95 and they were great!
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Old Sep 26, 2007 | 01:55 PM
  #42  
Rondosa's Avatar
Meet Krissy, Our Star Racer
 
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From: Toronto, Ontario
Guys - need some help.

I had Eibach ProKits w/oem shocks for a while until I couldn't stand the roughness anymore and got the D-specs. At first it seemed smoother but the ride is still quite rough to me, and bouncy.

I don't know what to change. When I go around corners, it's great and all but over bumps I'm afraid I'm going to crack my skull open from hitting the headliner of the car one day. It sends me flying.

The roughness is shaking rattles loose in my car and I'm getting frustrated. I thought the progressive nature would be good but it's not. I don't know if it's the Tokicos or the Eibachs. A tech told me these shocks are known for being a bit bouncier and that I should have gotten Konis.


Any advice? What about H&R and Bilsteins - is there a good combo out there for the Mustang? I had this on my last car and it was a great set up (not a Mustang though).



Kristina
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Old Sep 26, 2007 | 02:41 PM
  #43  
kevinb120's Avatar
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d-specs and ultralites you can always soften the d-specs a bit. Its the springs that are harsh.
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Old Sep 26, 2007 | 08:10 PM
  #44  
RadBOSS's Avatar
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Joined: August 16, 2005
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From: Central Coast, CA
What are the Spec-D adjusting screws set to?

Have a heavy foot do we?

Clarify what you mean by bounce. There is a difference between the car having a large amplitude cyclic bouncing after encountering a bump, vs. being launched by a bump in the road.

This is not a Lexus, so hopefully your ride feel ambition is not set too high. The ultra lights are stiffer than factory and you will need slighly more damping to keep them in control. Spec-D is a step in the right direction. You may need to play with the setting until you get balance you feel most comfortable. If you set them too stiff, then you are defeating any possiblity of a smoother ride. But a smooth or soft ride it will not be.


Originally Posted by Rondosa
Guys - need some help.

I had Eibach ProKits w/oem shocks for a while until I couldn't stand the roughness anymore and got the D-specs. At first it seemed smoother but the ride is still quite rough to me, and bouncy.

I don't know what to change. When I go around corners, it's great and all but over bumps I'm afraid I'm going to crack my skull open from hitting the headliner of the car one day. It sends me flying.

The roughness is shaking rattles loose in my car and I'm getting frustrated. I thought the progressive nature would be good but it's not. I don't know if it's the Tokicos or the Eibachs. A tech told me these shocks are known for being a bit bouncier and that I should have gotten Konis.


Any advice? What about H&R and Bilsteins - is there a good combo out there for the Mustang? I had this on my last car and it was a great set up (not a Mustang though).



Kristina
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Old Sep 27, 2007 | 08:33 AM
  #45  
Rondosa's Avatar
Meet Krissy, Our Star Racer
 
Joined: March 19, 2005
Posts: 818
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From: Toronto, Ontario
Originally Posted by RadBOSS
What are the Spec-D adjusting screws set to?
2 turns from full soft, iirc.


Originally Posted by RadBOSS
Have a heavy foot do we?
Guilty.

Originally Posted by RadBOSS
Clarify what you mean by bounce. There is a difference between the car having a large amplitude cyclic bouncing after encountering a bump, vs. being launched by a bump in the road.
There's not a lot of cyclical bouncing after encountering a bump so much as any road imperfection sends me flying. At highway speeds if I hit a large raised bump in the road I nearly break my neck. The car settles quickly, but I have to tell passengers to hang on. It's getting slightly embarassing.

Two weeks ago when my parents were in town for a wedding, I told my dad (who needed a car to get to the ceremony, since my mom had their car already there) he could take mine, not a problem but he paused for a moment. I then suggested that he could also, if he wanted to, take my boyfriend's MKV GTI instead, which was also parked at my place. He normally never likes to drive other people's cars, esp outside of the family. And he chose the GTI. He said he needs a kidney belt to drive my car.

I know I won't ever get a Cadilac ride, but there's got to be something better then what I have now. I'll get out my adjustment tool and start playing with the D-Specs but I'd like to figure out which bits are the culprits and go from there to see about fixing it.

Thanks for your advice...keep it coming
Kristina
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Old Sep 27, 2007 | 07:59 PM
  #46  
ttbit's Avatar
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Originally Posted by Rondosa
2 turns from full soft, iirc.
Full soft?? You don't want to back them out too much! Turn them clockwise until they are tight, turn back out 4 turns to start. See if that helps. Too soft can mean to harsh on small bumps as you take the dampening out. I have mine at about 4.5 out and am happy.
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Old Sep 28, 2007 | 07:39 AM
  #47  
Rondosa's Avatar
Meet Krissy, Our Star Racer
 
Joined: March 19, 2005
Posts: 818
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From: Toronto, Ontario
Originally Posted by ttbit
Full soft?? You don't want to back them out too much! Turn them clockwise until they are tight, turn back out 4 turns to start. See if that helps. Too soft can mean to harsh on small bumps as you take the dampening out. I have mine at about 4.5 out and am happy.
OK - IIRC, aren't there 7 full turns on the D-specs? So really, I'm 5 turns from full hard. Anyways I'm going to have at them this weekend and see what happens.
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Old Sep 28, 2007 | 02:01 PM
  #48  
RadBOSS's Avatar
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From: Central Coast, CA
I was going suggest 5 turns CCW from full hard (CW) as recommeded by Tokio, but you are already there. I tried a little softer and to me it felt worse than the factory shocks (I am still running the factory springs). Keeping in mind your new springs are stiffer than factory, they need more damping ... but just enough. If they are too soft, the wheel bounce will be more severe (against the bump stops) and the rebound will be less controled. So you might try a turn or more stiffer first to see the result of a coarse adjustment. You should select a section of road or parking lot where you can repeatably go over the same bump(s) at the same speed. Do a couple passes at each setting so you can assess the difference, then work your adjustment down (or up) to where it feels best to you. Or you might just consider running the adjustment to full hard, check the reaction to bumps, if too firm (I think it will), back off 2 -1/2 turns and test again. If still too firm, back off another 1 1/4 turns, retest. Continue to make further incremential adjustments until it feels the best for you (may not still be what you are looking for).

Killer bumps will always be a problem with a lowered car because you have given away wheel bounce travel. So the same bump energy has to be taken in half the distance (assuming you have a 1 1/2" drop)

You have a good sense of humor, and your car REALLY looks nice.

Originally Posted by Rondosa
OK - IIRC, aren't there 7 full turns on the D-specs? So really, I'm 5 turns from full hard. Anyways I'm going to have at them this weekend and see what happens.
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Old Sep 28, 2007 | 04:09 PM
  #49  
RonG's Avatar
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Joined: May 23, 2006
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From: Aliso Viejo, CA
I just installed Steeda Sport springs with Tokico D-Specs in my 06 GT. My initial test drive was very disappointing. The ride was very stiff with 4 turns out from hard on all 4 corners. It seemed like I could feel every little imperfection in the road. I should also say that I’m at the age where ride is more important than getting the ultimate handling experience.

I was on the verge of pulling is all out, but I continued to play with the shock settings. I’m now at 5 turns out from full hard in the front and 7 turns out in the rear. The ride is now, while not as smooth as stock, comfortable and more controlled. I may add another ½ turn in the front and back in each direction to see how the car responds.

Since ride comfort vs. handling is very subjective, I’m glad I purchased the D-Specs for their adjustability. My expectations on how the car would perform turned out different than reality once the parts were installed. It’s very tough to read someone’s ride impression on a forum like this and then relate it to how you want the car to feel. I’m sure many people would think my car feels ā€œfloatyā€, but I’m happy with how it performs. As RadBOSS states, keep testing and adjusting until it is right for you.
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Old Oct 1, 2007 | 09:46 AM
  #50  
jimh90sc's Avatar
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Joined: October 11, 2004
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Can anyone comment about the ride with the BMR lowering kit?? I'm thinking about their kit with stock struts.

Thanks, in advance
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