# DIY Rear, anti airdam (top speed/track mod)

**URL:** <https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056>\
**Category:** Builds\
**Created:** [October 20, 2006, 8:24am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056 "2006-10-20T08:24:13Z")\
**Posts on this page:** 20\
**Page:** 2

<div class="post-metadata">

**Author:** ![neonglh](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/neonglh/32/4951_2.png) [@neonglh](https://forums.speedlife.net/u/neonglh)\
**Post date:** [November 17, 2006, 8:13am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/21 "2006-11-17T08:13:55Z")

</div>

Well… it worked :tup:

---

<div class="post-metadata">

**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [November 17, 2006, 8:14am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/22 "2006-11-17T08:14:52Z")

</div>

based on?

---

<div class="post-metadata">

**Author:** ![neonglh](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/neonglh/32/4951_2.png) [@neonglh](https://forums.speedlife.net/u/neonglh)\
**Post date:** [November 17, 2006, 8:15am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/23 "2006-11-17T08:15:33Z")

</div>

Good results with it.

---

<div class="post-metadata">

**Author:** ![jay\_g](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jay_g/32/111288_2.png) [@jay\_g](https://forums.speedlife.net/u/jay_g)\
**Post date:** [November 17, 2006, 8:16am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/24 "2006-11-17T08:16:17Z")

</div>

i think the bigger cam gave the results

---

<div class="post-metadata">

**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [November 17, 2006, 8:18am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/25 "2006-11-17T08:18:44Z")

</div>

> [@neonglh](#):
>
> Good results with it.

haha… like his car not bursting into a ball of flames?

quantitative data?

---

<div class="post-metadata">

**Author:** ![neonglh](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/neonglh/32/4951_2.png) [@neonglh](https://forums.speedlife.net/u/neonglh)\
**Post date:** [November 17, 2006, 8:20am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/26 "2006-11-17T08:20:37Z")

</div>

I’ll let him discuss his benefits, but it was faster then without, with the same engine/mods (to an extent, car had different slicks on)

–mark

---

<div class="post-metadata">

**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [November 17, 2006, 8:22am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/27 "2006-11-17T08:22:44Z")

</div>

> [@neonglh](#):
>
> I’ll let him discuss his benefits, but it was faster then without, with the same engine/mods (to an extent, car had different slicks on)
> 
> –mark

lol. i don’t buy it.  
what about changes in ambient temperature?  
if he had different tires, were his 60ft times consistent?

---

<div class="post-metadata">

**Author:** ![neonglh](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/neonglh/32/4951_2.png) [@neonglh](https://forums.speedlife.net/u/neonglh)\
**Post date:** [November 17, 2006, 8:27am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/28 "2006-11-17T08:27:20Z")

</div>

Dont buy it then, i’m not selling it 😛

You’re right, he got slower, it still run’s low 13’s ☹

–mark

---

<div class="post-metadata">

**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [November 17, 2006, 8:31am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/29 "2006-11-17T08:31:26Z")

</div>

> [@neonglh](#):
>
> Dont buy it then, i’m not selling it 😛
> 
> You’re right, he got slower, it still run’s low 13’s ☹
> 
> –mark

i’m not trying to be trouble, but why come and make an ambiguous claim and not back it up.

---

<div class="post-metadata">

**Author:** ![jay\_g](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jay_g/32/111288_2.png) [@jay\_g](https://forums.speedlife.net/u/jay_g)\
**Post date:** [November 17, 2006, 8:31am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/30 "2006-11-17T08:31:28Z")

</div>

> [@neonglh](#):
>
> _snip_

you must be smoking some great crack

---

<div class="post-metadata">

**Author:** ![neonglh](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/neonglh/32/4951_2.png) [@neonglh](https://forums.speedlife.net/u/neonglh)\
**Post date:** [November 17, 2006, 8:34am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/31 "2006-11-17T08:34:31Z")

</div>

> [@newman](#):
>
> i’m not trying to be trouble, but why come and make an ambiguous claim and not back it up.

Just take my word for it if you want, if not, dont. John will tell his results if he wants too, thats not up to me. Everyone in here said it would not work, he had great results with it, end of story.

I dont really care if you belive/want to belive/care, etc… Doesnt effect me either way.

–mark

---

<div class="post-metadata">

**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [November 17, 2006, 8:35am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/32 "2006-11-17T08:35:40Z")

</div>

guys, this totally didn’t work at all.

(take my word for it)

---

<div class="post-metadata">

**Author:** ![neonglh](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/neonglh/32/4951_2.png) [@neonglh](https://forums.speedlife.net/u/neonglh)\
**Post date:** [November 17, 2006, 8:39am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/33 "2006-11-17T08:39:23Z")

</div>

Explain to me how I have actual real life examples of how cutting holes in your bumper gives you MPH increase in the quarter mile, but this would do nothing? You say it creates a dummy zone of air therefore keeping air out, but then the speed holes wouldn’t do anything. Explain this.

–mark

---

<div class="post-metadata">

**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [November 17, 2006, 8:45am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/34 "2006-11-17T08:45:19Z")

</div>

i’m not saying that it’s guaranteed not to work, but you can’t just say that something works and expect eeryone to accept it, based on your word alone.

However, don’t you think that automakers, who spend millions developing aerodynamics, using advanced testing methods would have looked into doing something like this? The part would cost the automaker a dollar per vehicle.

All i am saying is that i am smarter than you. If you’ve learned that lesson, then we’re both on the same page.

---

<div class="post-metadata">

**Author:** ![MPD47](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mpd47/32/7383_2.png) [@MPD47](https://forums.speedlife.net/u/MPD47)\
**Post date:** [November 17, 2006, 8:49am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/35 "2006-11-17T08:49:11Z")

</div>

Run it on the exact same day, with the exact same tires, at the exact same temperature and humidity, with and without the piece, with data and we’ll talk. Until then, it didnt work.

---

<div class="post-metadata">

**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [November 17, 2006, 8:52am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/36 "2006-11-17T08:52:18Z")

</div>

> [@MPD47](#):
>
> Run it on the exact same day, with the exact same tires, at the exact same temperature and humidity, with and without the piece, with data and we’ll talk. Until then, it didnt work.

💏

---

<div class="post-metadata">

**Author:** ![boardjnky4](https://avatars.discourse-cdn.com/v4/letter/b/96bed5/32.png) [@boardjnky4](https://forums.speedlife.net/u/boardjnky4)\
**Post date:** [November 17, 2006, 9:22am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/37 "2006-11-17T09:22:29Z")

</div>

that part really just seems like its gonna create lift rather help at all

im not an engineer, but common mechanical sense chimes in here

---

<div class="post-metadata">

**Author:** ![Studderin](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/studderin/32/7197_2.png) [@Studderin](https://forums.speedlife.net/u/Studderin)\
**Post date:** [November 17, 2006, 9:56am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/38 "2006-11-17T09:56:20Z")

</div>

:gotme: your on crack

no way I tested anything?

---

<div class="post-metadata">

**Author:** ![newman](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/newman/32/7569_2.png) [@newman](https://forums.speedlife.net/u/newman)\
**Post date:** [November 17, 2006, 9:58am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/39 "2006-11-17T09:58:32Z")

</div>

> [@Studderin](#):
>
> :gotme: your on crack
> 
> no way I tested anything?

what does this even mean?

---

<div class="post-metadata">

**Author:** ![Studderin](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/studderin/32/7197_2.png) [@Studderin](https://forums.speedlife.net/u/Studderin)\
**Post date:** [November 17, 2006, 10:02am UTC](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056/40 "2006-11-17T10:02:33Z")

</div>

> [@neonglh](#):
>
> Well… it worked :tup:

I should have quoted ^^

Last time I got data (the after). just about everything was differnt other then the color of the car.

[Previous page](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056.md?page=1)

[Next page](https://forums.speedlife.net/t/diy-rear-anti-airdam-top-speed-track-mod/19056.md?page=3)