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Old 09-06-2014, 01:47 PM   #1
EDFHOBBIES
 
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172 MPH what mods will make it more stable at high speeds?

What suspension mods or spoilers will help @ high speeds. I had no idea it felt this loose at high speeds..no breeze road was fairly smooth but at that fast I guess any imperfections feel like small humps.
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Old 09-06-2014, 02:45 PM   #2
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Zl1 parts produce downforce
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Old 09-06-2014, 03:11 PM   #3
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The main thing you're going to want to do is go to a track.



Once you've done that:

Font splitter
Lowered ride height (if possible)
Rocker Moldings
Hood vents (arguably help)
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Old 09-06-2014, 04:20 PM   #4
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zl1 spolier

prob gonna be selling my spolier soon, just picked up a z28 spolier but need to have it painted first. my current spoiler is hydrodipped though. There are some pics of it on my thread "my new 2015 zl1"

Last edited by ORLYHPD; 09-06-2014 at 04:22 PM. Reason: spoiler*
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Old 09-06-2014, 04:45 PM   #5
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This! http://www.aprperformance.com/index....sk=view&id=182

Almost 800 pounds of downforce at that speed...
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Old 09-06-2014, 04:51 PM   #6
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I have the 1LE splitter and the side skirts. So, winglets and, a, larger spoiler should help.
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Old 09-06-2014, 05:34 PM   #7
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Belly pan, hood vent, bigger splitter, rear spoiler
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Old 09-06-2014, 07:59 PM   #8
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If you have not done so already, replace all the rubber bushings in the car! This and sways made my car a lot less nervous at higher speeds.

http://www.lmperformance.com/75290

http://www.lmperformance.com/178744
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Old 09-06-2014, 08:01 PM   #9
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How often are you hitting this mythical 172mph is what I'd like to know?
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Old 09-06-2014, 09:26 PM   #10
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1 mile, no speed limit, the "Texas mile" event, I hope...
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Old 09-06-2014, 10:35 PM   #11
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I think I would spend my money first on a Roll cage, 5 point seat-belt setup, and a frikin helmet, before I would want to start feeling all warm and fuzzy at 170mph+

But that's just me.
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Old 09-08-2014, 03:41 PM   #12
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My ZL1 felt dead stable at those speeds so maybe some ZL parts will help.
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Old 09-08-2014, 04:21 PM   #13
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Suspension and Aero. Did you ever pull the trigger on that suspension package? That will help out a ton!

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Tyler
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Old 09-08-2014, 08:14 PM   #14
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Not yet Still contemplating.
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Old 09-08-2014, 11:51 PM   #15
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Quote:
Originally Posted by NinoSS View Post
If you have not done so already, replace all the rubber bushings in the car! This and sways made my car a lot less nervous at higher speeds.

http://www.lmperformance.com/75290

http://www.lmperformance.com/178744
I would also upgrade to the FE4 LCA's and get the 1LE sway (BMR upgrade) -- that made a huge difference on my 11 2SS...

I got ALL of my suspension mods from JDP Tyler -- really made a difference -- will be doing the rest of the bushing @ some point.

-Don
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Old 09-10-2014, 07:31 AM   #16
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Thanks Don...
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Old 09-13-2014, 11:34 AM   #17
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I didn't know we had so many aero engineers on the forums!

Sounds like you are looking to waste money slapping parts on, trying to fix an issue for an event you know was dumb...but just incase it happens again?
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Old 09-13-2014, 08:13 PM   #18
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The most import thing you do with a car that travels at high speed it align it for high speed driving. What alignment specs are you running?
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Old 09-14-2014, 12:32 PM   #19
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Quote:
Originally Posted by EDFHOBBIES View Post
What suspension mods or spoilers will help @ high speeds. I had no idea it felt this loose at high speeds..no breeze road was fairly smooth but at that fast I guess any imperfections feel like small humps.
Bilstein Pss10s with 12k rear BC racing springs, DSW swaybars, Z28 front control arms rear BMR toe link arms and rear lower control arms and ZL-1 facia with wider wheels and tires and you'll be all set.
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Old 09-15-2014, 08:11 AM   #20
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Quote:
Originally Posted by L99CAMA2011 View Post
Bilstein Pss10s with 12k rear BC racing springs, DSW swaybars, Z28 front control arms rear BMR toe link arms and rear lower control arms and ZL-1 facia with wider wheels and tires and you'll be all set.
Got part numbers for these parts?
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Old 09-15-2014, 12:17 PM   #21
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Why would you use anything other than the Z/28 DSSV struts?
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